1) The document discusses a study that investigated whether subliminally priming the color of a suspect's shirt can influence eyewitness identification. Participants watched a crime video and later identified a suspect from a lineup. The shirt color of each suspect was primed subliminally with a color word that either matched or didn't match the shirt.
2) Contrary to expectations, participants did not choose suspects more frequently when primed with a matching color. However, over 90% of participants falsely identified a suspect, despite the actual culprit not being in the lineup.
3) This study explored how implicit or subliminal priming could influence eyewitness identification, which has received little attention compared to research on explicit memory
This lecture slide concerns the accuracy report of eye witness testimony. How accurate are eye-witness testimonials? And how can we interview witness so that their reports can be more accurate? It identifies the 'Cognitive Interview Model' which is a interview approach for increasing accuracy of reports while minimizes false information. One of the main mistake of interviewers are asking misleading questions. For instance, 'did you see the gun?' as opposed to 'did you see 'a' gun?' First part was misleading because it implies that a gun was witnessed when in fact there may not have been a gun present.
Add your comments and questions below.
Forensic Psychology view on eyewitness identification. Includes vision and memory, legal concepts and recommendations. This powerpoint is a review of the NAS report titled Identifying the Culprit
This lecture slide concerns the accuracy report of eye witness testimony. How accurate are eye-witness testimonials? And how can we interview witness so that their reports can be more accurate? It identifies the 'Cognitive Interview Model' which is a interview approach for increasing accuracy of reports while minimizes false information. One of the main mistake of interviewers are asking misleading questions. For instance, 'did you see the gun?' as opposed to 'did you see 'a' gun?' First part was misleading because it implies that a gun was witnessed when in fact there may not have been a gun present.
Add your comments and questions below.
Forensic Psychology view on eyewitness identification. Includes vision and memory, legal concepts and recommendations. This powerpoint is a review of the NAS report titled Identifying the Culprit
Running Head MISINFORMATION EFFECT1MISINFORMATION EFFECT2.docxcharisellington63520
Running Head: MISINFORMATION EFFECT 1
MISINFORMATION EFFECT 2
Abstract
This paper explores various published articles which depict research results from studies conducted on the effects of misinformation on eyewitness testimony. Misinformation is “false or inaccurate information, especially that which is deliberately intended to deceive” (Oxforddictionaries.com). With the use of misinformation it may be possible to mislead witnesses allowing them to present false information. This papers examines articles from researchers such as Blank, Ost, Davies, Jones, Lambert and Salmon (2013), Loftus (2005), Chrobak and Zaragoza (2013), and Eakin, Schreiber and Sergeant-Marshall (2003) in relation to other studies conducted in order to determine how misinformation is introduced, possible reasons the effect occurs, and suggestions on how to reduce its effects.
The Misinformation Effect and the Effects it has on Eyewitness Testimony
There is a wide misconception that a person’s long-term memory actually records experiences exactly as they happened. However, memories and events we have are very malleable and can be altered and/or molded. It is proven fact that our long-term memory is susceptible to errors. The impreciseness in a person’s memory can further be altered with the misinformation effect. The misinformation effect transpires when mislead information is presented to someone after they have experienced the event.
Misinformation can have unfavorable consequences in investigations and trials. “The fallibility of eyewitness memory is a crucial problem in the administration of justice, and documented cases of false convictions based on faulty eyewitness testimony abound” (Zaragoza, Payment, Ackil, Drivdahl & Beck, 2001, p. 473). Over the past few decade numerous studies have been conducted centering on the various facets and implications of the misinformation effect and how it affects eyewitness testimony. Through the introduction of misinformation to someone’s thoughts and observations, they can easily be manipulated, leading them to dictate false or inaccurate information. Misinformation may be presented in many ways to witnesses such as I nterviewing, cross-examination, and narratives. This paper examines research that has been conducted from various authors in regards to how misinformation is introduced, possible reasons the effect occurs, and suggestions on how to reduce its effects as well as propose where additional research may be conducted to further understand this phenomenon.
It has long since been discovered that the misinformation effect exists and can have negative effects when it comes to eyewitness testimony. In 2002, 110 inmates were released from prison due DNA exonerations making them not guilty. Out of the 110, eleven were on death row. In the majority of these cases the individuals were convicted largely on the testimony of eyewitnesses.
Numerous studies have been conducted over the past forty-f.
Literature ReviewIn an article written by Eakin et al. in 2003 f.docxSHIVA101531
Literature Review
In an article written by Eakin et al. in 2003 five studies were conducted to test the theory of the misinformation effect. They hypothesized that exposure to misleading information can significantly hamper one’s ability to report accurate information. They used modified opposition tests to test their participant’s memory. The participants were randomly assigned to the different experimental conditions and tested in small groups. “Different materials were developed for each of the experimental phases including the event slides, the postevent narrative, and the MOT” (Eakin et al., 2003). These experiments helped test how misleading information received postevent affects people’s memory. The tests were intended to separate retrieval-blocking effects. Retrieval blocking revolves around cue incrementing. Through their studies they found that people who had been exposed to misleading information were more likely to recall the misled information than accurate information. They found that this is true even when participants are given extensive warnings that the information they received may be misleading. They also determined in their study that receiving the warning immediately after encoding the information reduces the recall rate of misleading information. Through the studies they helped to prove that their hypothesis was true, that exposure to misleading information can hamper one’s ability to recall accurate information. These studies however do not study how suppression of memories my come into play. It also does not depict how long after one experiences an event may retrieval blocking pose a problem. This opens up the possibility that maybe we block information for a certain period of time and/or present misled information, then the accurate information may come to light at a later date.
Loftus may be considered one of the first explorers of the misinformation effect. In 2005 she wrote an article summing up her studies on this event. According to Loftus, 2005 “the misinformation effect has been observed in a variety of human and nonhuman species. And some groups of individuals are more susceptible than others.” She depicted that in certain conditions such as having a large amount of time between the event and questioning, may allow for a greater misinformation effect. Also with time she presents the facts that memory fades. With these two issues it Loftus presents the idea that one my rethink the event and place the misled information in due to weak memory of the event.
Like the Eakin et al. article Loftus also presented the position of offering a warning. She also concluded that offering a warning that misinformation may be presented helped to curb the effect but giving the warning after the information was received had little effect on the results. This helps contribute to the idea that after the misinformation has already been processed there is little one can do to reduce the recall effects. Loftus also adds in her arti ...
RUNNINGHEAD Bias in Criminal Investigations .docxanhlodge
RUNNINGHEAD: Bias in Criminal Investigations 1
Bias in Criminal Investigations
Alkhamis Abdualziz
Tiffin University
Bias in Criminal Investigations
06/09/2016
An Analogue Study of Confirmation Bias in Criminal Investigations
Convicting a suspect being guilty is usually a difficult task more especially to People given the responsibility to carry out the sentence. These individuals include; police officers, district attorneys, judges and jury members. This is widely contributed by risks they may face such as; developing confirmation bias or tunnel vision. These parties may readily become convinced that the suspect is guilty, and may then no longer be open to alternative scenarios in which the suspect is actually innocent
People are biased to test hypotheses by looking for confirmation rather than by searching for falsification. According to Kassin (2005) a research bases on psychology suggests that human beings rarely seek, interpret, and create behavioral data that verify it’ once they have an impression thus they are inclined for bias. In a classic study, Lord, Ross, and Lepper (1979) it was found out that confirmation bias has various definite level owing to the fact personal opinions do defer.
People have the aspects of favoring confirmation as laps testing strategy as illustrated by Wason’s card selection paradigm. They also tend to play a progressive role in producing information; apart from selectively confirming evidence, overweighting confirming evidence they also devise strategies in way that that they are more opportunist driven than falsification. (Snyder and Swann (1978) which used these case study to reach for a decision, the more confirming questions the interviewer asked, and the more likely naïve judges were to perceive the interviewee as an extravert. Hence, by asking confirmatory questions, people can actually create confirmatory behavioral information, even in the eye of the naïve beholder.
Confirmation bias is bound to occur during criminal proceeding due to the following; incidental miscarriages of justice in which confirmation bias on the part of police, public prosecution, and even the judge seems to have play central role. According to (Posthumus, 2005). Public defense and police seems to develop some kind of tunnel vision. Another reason is the structure of criminal proceeding. Judge prompt his verdict by naming the evidence that has led him to be convinced of the suspect’s guilt. Yet the process of justifying information is ignored. Criminal proceedings also affected by confirmation bias as (Meissner and kassim 2002) suggest. I t is difficult for police officer to change their minds if they believe that a suspect is lying. Same case applies to jurors they base their judgments on previous proceedings. Criminal procedure naturally provoke confirmation bias.
Three studies has been developed to help in determining between guilt-co.
Final Project SamplingJennifer AugustusPSY302Sept.docxvoversbyobersby
Final Project Sampling
Jennifer Augustus
PSY/302
September 17, 2014
Robert Gregory
Running head: FINAL PROJECT SAMPLING
1
FINAL PROJECT SAMPLING
3
Eyewitness Testimony and the Misinformation Effect Revised Draft
Proposed Research Topic
This study will focus on the Eyewitness Testimony and the Misinformation Effect. This is in relation to the criminal justice system.
The Research Question
What factors contribute to the misinformation effect as it applies to witness testimonies during criminal justice system submissions hearings from witnesses in crimes?
Hypotheses
Witnesses forget vital information regarding the observations made in various scenes resorting to misinformation during airing of their witnesses and various fundamental ways can be used to reduce misinformation effect.
Eyewitness Testimony and the Misinformation Effect
Annotated Bibliography
Malwina, S., & Romuald, P. (2013). Promoting eyewitness testimony quality: Warning vs. reinforced self-affirmation as methods of reduction of the misinformation effect.
This research journal stipulates ways in which warning and reinforced self-affirmation can be used to reduce the misinformation effect on witnesses. In the research, participants are exposed to watch some event after which they are made to read descriptions of the events with some incorrect information. The hypothesis used is confirmed when the participants report false details when misled. The materials used include an audio plus a description in which there were six incorrect details of the audio. The participants were later asked ten open-ended questions. A control experiment composed of a group of participants who are not misled reports correct information. Reinforced self-reaffirmation proved to reduce misinformation effect many times although its applicability in reducing misinformation effect on witnesses is limited as witnesses in reality can only be influenced after exposure to information. This research is essential as it proves the hypothesis of misinformation effect on witnesses after exposure to false details of events (Malwina & Romuald, 2013).
Stephen, P., Ainslie, M., Sabrina, B., & Leanne, B. (2010, Jan). A Prospective Investigation of the Vulnerability of Memory for Positive and Negative Emotional Scenes to the Misinformation Effect.
In this study, researchers investigate the effect of emotional content and passage of time on events to the misinformation and susceptibility of remembering the events. Participants were shown images of highly positive and negative events and asked questions on the images after a week or a month. Control experiment was performed whereby participants were misled on the information of the images. In the results, misled participants were substantially less accurate in answering the questions. In addition, passage of time decreased the accuracy of the participants. In addition, negative images were more susceptible to false memories as compared to positive images. This study ...
Module 3 OverviewIn Module 2, you learned about police psy.docxraju957290
Module 3 Overview
In Module 2, you learned about police psychology and the roles and functions of mental health professionals working with law enforcement officers. You were introduced to investigative techniques such as interviewing, interrogation, and polygraphy examinations that officers employ during the course of their duties. In Module 3, you will learn about two areas closely related to police psychology: criminology and investigative psychology.
This module will focus on criminal profiling, the use of the polygraph and other lie detection techniques, forensic hypnosis, and the ways to enhance the accuracy of eyewitness testimonies. When studying criminal profiling and forensic hypnosis, direct your attention to their validity and accuracy and the potential for introducing false and misleading information into an investigation. You will examine the role of psychopathy in criminal behavior. Finally, this module will focus on various types of criminal acts, including violent crimes and sexual assault.
Many students and forensic psychology professionals alike have become increasingly interested in the process of criminal profiling—the process by which information pertaining to a crime is utilized in creating a description of the likely offender. In your first assignment, you will discuss the techniques involved in criminal profiling. In addition to discussing techniques, though, you will consider the issues of accuracy and validity in criminal profiling. Given that profiling has had some major failures—consider, for example, the misidentification that occurred in the Atlanta Bomber case (Dewan, 2005)—issues of validity are important to be kept in mind. Following from the issue of accuracy and validity is the courtroom admissibility of profiling data. If you are unsure of the accuracy of profiling data, would you recommend its use in a court of law? If so, under what circumstances would you allow or not allow its use.
Another investigative technique in which forensic professionals are involved is forensic hypnosis—the process of eliciting memories of an event or events while under hypnosis. In forensic hypnosis, as opposed to clinical hypnosis, an examiner attempts to elicit memories for the purposes of identification of subjects or for understanding details of a crime. In your assignment, you will discuss your understanding of forensic hypnosis. Like profiling, there are significant questions of accuracy and validity. In memory recall under the influence of hypnosis, there is a potential for recalling memories, which are inaccurate or patently false. Once again, this raises the issue of courtroom admissibility. In conducting research on the admissibility issue, you will find that courts have varied in how they have decided the admissibility of recovered or refreshed memories. As you work on your assignment, ask yourself whether you will be in favor of allowing recovered memories in court.
Fieldwork Observation
Another important activit ...
Research on the reasons behind wrongful convictions in the United States as well as recommendations for decreasing the number of wrongful convictions that occur annually
Eye Witness
Eyewitness Misidentification
Name
Class
Date
Professor
Eyewitness Misidentification
Eyewitness identification refers to people who have viewed a crime or some part of the crime. While it would seem someone seeing a crime with their own two eyes would be a credible witness this is just not the case. The memory is a tricky thing constantly changing and adapting as new information is introduced. DNA testing has proven beyond a reasonable doubt that over 100 people have been found to be falsely convicted in large part due to eye witness testimony that was in fact false. Eye witness testimony can easily become contaminated. In cases involving trauma the witness focuses more on the weapon and suggestive practices by police can cause errors in the testimony.
Research has shown the human memory is flawed and cannot produce exact recall. Instead, witness memory is like any other evidence at a crime scene; it must be preserved carefully and retrieved methodically, or it can be contaminated (Wells. 2007). In psychology many different research studies have been conducted to learn why the witnesses will select the wrong suspect especially when trauma is involved. High stress situations, such as a murder, armed robbery, or rape can cause eye witnesses testimony to become skewed.
Human memory is not a tape recorder and cannot be rewound to give a perfect account of what happened (Morgan, 2004). The brain will fill in areas were the memory is lacking cause the eyewitness misidentification to occur. Weapons focus is another discovered cause of eye witness testimony that is inaccurate. If a weapons is used the witness will focus more on the weapon and less on the face of the suspect causing any identification to be less than accurate because they only get glimpses of the face of the suspect. Next suggestive identification, which mostly occurs in the lineup stage, refers to actions by police of even the witness that result in a misidentification.
Research has shown a correlation between the lineup and the misidentification. Psychological factors in eye witness misidentification discovered include relative judgment and malleability of witness certainty. Relative judgment in correlation to the lineup refers to the tendency of the eye witness to compare the potential suspects with their memory of the incident. The witness will then select the person who appears to look like the suspect they viewed. If there is any stress of trauma involved the memory becomes even more susceptible to change.
The malleability of witness certainty refers to how certain the witness is when making the identification. The malleability of the witness will depend on their level of confidence they are making the right identification not based on memory but from cues by law enforcement suggesting their selection is correct. These cues can be verbal or nonverbal. Once the witness receivies confirmation they have selected th ...
Week 5 Mood and Anxiety Disorders in Children and AdolescentsRe.docxlillie234567
Week 5: Mood and Anxiety Disorders in Children and Adolescents
Reminders for WEEK 5:
· Required Readings & Media
· Assignment: Patient Education for Children and Adolescents
· To Prepare
· By Day 1, your Instructor will assign a mood or anxiety disorder diagnosis for you to use for this Assignment.
· Assignments:
Generalized Anxiety Disorder
· Medication: duloxetine (age 7–17)
· Research signs and symptoms for your diagnosis, pharmacological treatments, nonpharmacological treatments, and appropriate community resources and referrals.
· The Assignment - In a 300- to 500-word blog post written for a patient and/or caregiver audience, explain signs and symptoms for your diagnosis, pharmacological treatments, nonpharmacological treatments, and appropriate community resources and referrals.
RESEARCH ARTICLE
Case rethinking: a protocol for reviewing criminal investigations
D. Kim Rossmo*
Center for Geospatial Intelligence and Investigation, School of Criminal Justice, Texas State
University, San Marcos, TX, USA
Mistakes in decision-making have been identified as the most common type of error
in police investigations. Consequently, wrongful convictions and other types of crimi-
nal investigative failure may require a complete case ‘rethinking,’ particularly when
new evidence disrupts the existing theory. A rush to judgment resulting in a prema-
ture shift from an evidence-based to a suspect-based investigation can produce a
number of problematic thinking errors. Faulty assumptions, tunnel vision, groupthink,
and other cognitive biases and organizational traps hinder evidentiary interpretation
and evaluation. This article outlines a protocol for reviewing evidence and rethinking
a wrongful conviction or unsolved crime when the existing investigative theory
appears to be incorrect. The protocol involves four stages: (1) evidence; (2) interpre-
tation; (3) patterns; and (4) analysis.
Keywords: criminal investigation; police detectives; criminal investigative failures;
cold cases; wrongful convictions
Introduction
Police agencies increasingly use sophisticated forensic techniques and powerful
computers in their response to major crimes. What can sometimes be forgotten in this
emphasis on technology, however, is the need to properly think about the information
produced by these and other approaches. Police investigations require rational analysis
and logical thinking. When cognitive biases and organizational traps distort the
process, wrongful convictions and other types of criminal investigative failure can
result.
This article presents a case rethinking protocol that has been successfully used on
unsolved crimes and wrongful convictions. The focus is on inquiries of crimes, such as
murder, where what happened remains unknown. Reviewing a case often involves the
effort to discover new evidence; however, this method is concerned with rethinking
existing evidence. Aspects of the protocol may also be helpful in.
Running Head MISINFORMATION EFFECT1MISINFORMATION EFFECT2.docxcharisellington63520
Running Head: MISINFORMATION EFFECT 1
MISINFORMATION EFFECT 2
Abstract
This paper explores various published articles which depict research results from studies conducted on the effects of misinformation on eyewitness testimony. Misinformation is “false or inaccurate information, especially that which is deliberately intended to deceive” (Oxforddictionaries.com). With the use of misinformation it may be possible to mislead witnesses allowing them to present false information. This papers examines articles from researchers such as Blank, Ost, Davies, Jones, Lambert and Salmon (2013), Loftus (2005), Chrobak and Zaragoza (2013), and Eakin, Schreiber and Sergeant-Marshall (2003) in relation to other studies conducted in order to determine how misinformation is introduced, possible reasons the effect occurs, and suggestions on how to reduce its effects.
The Misinformation Effect and the Effects it has on Eyewitness Testimony
There is a wide misconception that a person’s long-term memory actually records experiences exactly as they happened. However, memories and events we have are very malleable and can be altered and/or molded. It is proven fact that our long-term memory is susceptible to errors. The impreciseness in a person’s memory can further be altered with the misinformation effect. The misinformation effect transpires when mislead information is presented to someone after they have experienced the event.
Misinformation can have unfavorable consequences in investigations and trials. “The fallibility of eyewitness memory is a crucial problem in the administration of justice, and documented cases of false convictions based on faulty eyewitness testimony abound” (Zaragoza, Payment, Ackil, Drivdahl & Beck, 2001, p. 473). Over the past few decade numerous studies have been conducted centering on the various facets and implications of the misinformation effect and how it affects eyewitness testimony. Through the introduction of misinformation to someone’s thoughts and observations, they can easily be manipulated, leading them to dictate false or inaccurate information. Misinformation may be presented in many ways to witnesses such as I nterviewing, cross-examination, and narratives. This paper examines research that has been conducted from various authors in regards to how misinformation is introduced, possible reasons the effect occurs, and suggestions on how to reduce its effects as well as propose where additional research may be conducted to further understand this phenomenon.
It has long since been discovered that the misinformation effect exists and can have negative effects when it comes to eyewitness testimony. In 2002, 110 inmates were released from prison due DNA exonerations making them not guilty. Out of the 110, eleven were on death row. In the majority of these cases the individuals were convicted largely on the testimony of eyewitnesses.
Numerous studies have been conducted over the past forty-f.
Literature ReviewIn an article written by Eakin et al. in 2003 f.docxSHIVA101531
Literature Review
In an article written by Eakin et al. in 2003 five studies were conducted to test the theory of the misinformation effect. They hypothesized that exposure to misleading information can significantly hamper one’s ability to report accurate information. They used modified opposition tests to test their participant’s memory. The participants were randomly assigned to the different experimental conditions and tested in small groups. “Different materials were developed for each of the experimental phases including the event slides, the postevent narrative, and the MOT” (Eakin et al., 2003). These experiments helped test how misleading information received postevent affects people’s memory. The tests were intended to separate retrieval-blocking effects. Retrieval blocking revolves around cue incrementing. Through their studies they found that people who had been exposed to misleading information were more likely to recall the misled information than accurate information. They found that this is true even when participants are given extensive warnings that the information they received may be misleading. They also determined in their study that receiving the warning immediately after encoding the information reduces the recall rate of misleading information. Through the studies they helped to prove that their hypothesis was true, that exposure to misleading information can hamper one’s ability to recall accurate information. These studies however do not study how suppression of memories my come into play. It also does not depict how long after one experiences an event may retrieval blocking pose a problem. This opens up the possibility that maybe we block information for a certain period of time and/or present misled information, then the accurate information may come to light at a later date.
Loftus may be considered one of the first explorers of the misinformation effect. In 2005 she wrote an article summing up her studies on this event. According to Loftus, 2005 “the misinformation effect has been observed in a variety of human and nonhuman species. And some groups of individuals are more susceptible than others.” She depicted that in certain conditions such as having a large amount of time between the event and questioning, may allow for a greater misinformation effect. Also with time she presents the facts that memory fades. With these two issues it Loftus presents the idea that one my rethink the event and place the misled information in due to weak memory of the event.
Like the Eakin et al. article Loftus also presented the position of offering a warning. She also concluded that offering a warning that misinformation may be presented helped to curb the effect but giving the warning after the information was received had little effect on the results. This helps contribute to the idea that after the misinformation has already been processed there is little one can do to reduce the recall effects. Loftus also adds in her arti ...
RUNNINGHEAD Bias in Criminal Investigations .docxanhlodge
RUNNINGHEAD: Bias in Criminal Investigations 1
Bias in Criminal Investigations
Alkhamis Abdualziz
Tiffin University
Bias in Criminal Investigations
06/09/2016
An Analogue Study of Confirmation Bias in Criminal Investigations
Convicting a suspect being guilty is usually a difficult task more especially to People given the responsibility to carry out the sentence. These individuals include; police officers, district attorneys, judges and jury members. This is widely contributed by risks they may face such as; developing confirmation bias or tunnel vision. These parties may readily become convinced that the suspect is guilty, and may then no longer be open to alternative scenarios in which the suspect is actually innocent
People are biased to test hypotheses by looking for confirmation rather than by searching for falsification. According to Kassin (2005) a research bases on psychology suggests that human beings rarely seek, interpret, and create behavioral data that verify it’ once they have an impression thus they are inclined for bias. In a classic study, Lord, Ross, and Lepper (1979) it was found out that confirmation bias has various definite level owing to the fact personal opinions do defer.
People have the aspects of favoring confirmation as laps testing strategy as illustrated by Wason’s card selection paradigm. They also tend to play a progressive role in producing information; apart from selectively confirming evidence, overweighting confirming evidence they also devise strategies in way that that they are more opportunist driven than falsification. (Snyder and Swann (1978) which used these case study to reach for a decision, the more confirming questions the interviewer asked, and the more likely naïve judges were to perceive the interviewee as an extravert. Hence, by asking confirmatory questions, people can actually create confirmatory behavioral information, even in the eye of the naïve beholder.
Confirmation bias is bound to occur during criminal proceeding due to the following; incidental miscarriages of justice in which confirmation bias on the part of police, public prosecution, and even the judge seems to have play central role. According to (Posthumus, 2005). Public defense and police seems to develop some kind of tunnel vision. Another reason is the structure of criminal proceeding. Judge prompt his verdict by naming the evidence that has led him to be convinced of the suspect’s guilt. Yet the process of justifying information is ignored. Criminal proceedings also affected by confirmation bias as (Meissner and kassim 2002) suggest. I t is difficult for police officer to change their minds if they believe that a suspect is lying. Same case applies to jurors they base their judgments on previous proceedings. Criminal procedure naturally provoke confirmation bias.
Three studies has been developed to help in determining between guilt-co.
Final Project SamplingJennifer AugustusPSY302Sept.docxvoversbyobersby
Final Project Sampling
Jennifer Augustus
PSY/302
September 17, 2014
Robert Gregory
Running head: FINAL PROJECT SAMPLING
1
FINAL PROJECT SAMPLING
3
Eyewitness Testimony and the Misinformation Effect Revised Draft
Proposed Research Topic
This study will focus on the Eyewitness Testimony and the Misinformation Effect. This is in relation to the criminal justice system.
The Research Question
What factors contribute to the misinformation effect as it applies to witness testimonies during criminal justice system submissions hearings from witnesses in crimes?
Hypotheses
Witnesses forget vital information regarding the observations made in various scenes resorting to misinformation during airing of their witnesses and various fundamental ways can be used to reduce misinformation effect.
Eyewitness Testimony and the Misinformation Effect
Annotated Bibliography
Malwina, S., & Romuald, P. (2013). Promoting eyewitness testimony quality: Warning vs. reinforced self-affirmation as methods of reduction of the misinformation effect.
This research journal stipulates ways in which warning and reinforced self-affirmation can be used to reduce the misinformation effect on witnesses. In the research, participants are exposed to watch some event after which they are made to read descriptions of the events with some incorrect information. The hypothesis used is confirmed when the participants report false details when misled. The materials used include an audio plus a description in which there were six incorrect details of the audio. The participants were later asked ten open-ended questions. A control experiment composed of a group of participants who are not misled reports correct information. Reinforced self-reaffirmation proved to reduce misinformation effect many times although its applicability in reducing misinformation effect on witnesses is limited as witnesses in reality can only be influenced after exposure to information. This research is essential as it proves the hypothesis of misinformation effect on witnesses after exposure to false details of events (Malwina & Romuald, 2013).
Stephen, P., Ainslie, M., Sabrina, B., & Leanne, B. (2010, Jan). A Prospective Investigation of the Vulnerability of Memory for Positive and Negative Emotional Scenes to the Misinformation Effect.
In this study, researchers investigate the effect of emotional content and passage of time on events to the misinformation and susceptibility of remembering the events. Participants were shown images of highly positive and negative events and asked questions on the images after a week or a month. Control experiment was performed whereby participants were misled on the information of the images. In the results, misled participants were substantially less accurate in answering the questions. In addition, passage of time decreased the accuracy of the participants. In addition, negative images were more susceptible to false memories as compared to positive images. This study ...
Module 3 OverviewIn Module 2, you learned about police psy.docxraju957290
Module 3 Overview
In Module 2, you learned about police psychology and the roles and functions of mental health professionals working with law enforcement officers. You were introduced to investigative techniques such as interviewing, interrogation, and polygraphy examinations that officers employ during the course of their duties. In Module 3, you will learn about two areas closely related to police psychology: criminology and investigative psychology.
This module will focus on criminal profiling, the use of the polygraph and other lie detection techniques, forensic hypnosis, and the ways to enhance the accuracy of eyewitness testimonies. When studying criminal profiling and forensic hypnosis, direct your attention to their validity and accuracy and the potential for introducing false and misleading information into an investigation. You will examine the role of psychopathy in criminal behavior. Finally, this module will focus on various types of criminal acts, including violent crimes and sexual assault.
Many students and forensic psychology professionals alike have become increasingly interested in the process of criminal profiling—the process by which information pertaining to a crime is utilized in creating a description of the likely offender. In your first assignment, you will discuss the techniques involved in criminal profiling. In addition to discussing techniques, though, you will consider the issues of accuracy and validity in criminal profiling. Given that profiling has had some major failures—consider, for example, the misidentification that occurred in the Atlanta Bomber case (Dewan, 2005)—issues of validity are important to be kept in mind. Following from the issue of accuracy and validity is the courtroom admissibility of profiling data. If you are unsure of the accuracy of profiling data, would you recommend its use in a court of law? If so, under what circumstances would you allow or not allow its use.
Another investigative technique in which forensic professionals are involved is forensic hypnosis—the process of eliciting memories of an event or events while under hypnosis. In forensic hypnosis, as opposed to clinical hypnosis, an examiner attempts to elicit memories for the purposes of identification of subjects or for understanding details of a crime. In your assignment, you will discuss your understanding of forensic hypnosis. Like profiling, there are significant questions of accuracy and validity. In memory recall under the influence of hypnosis, there is a potential for recalling memories, which are inaccurate or patently false. Once again, this raises the issue of courtroom admissibility. In conducting research on the admissibility issue, you will find that courts have varied in how they have decided the admissibility of recovered or refreshed memories. As you work on your assignment, ask yourself whether you will be in favor of allowing recovered memories in court.
Fieldwork Observation
Another important activit ...
Research on the reasons behind wrongful convictions in the United States as well as recommendations for decreasing the number of wrongful convictions that occur annually
Eye Witness
Eyewitness Misidentification
Name
Class
Date
Professor
Eyewitness Misidentification
Eyewitness identification refers to people who have viewed a crime or some part of the crime. While it would seem someone seeing a crime with their own two eyes would be a credible witness this is just not the case. The memory is a tricky thing constantly changing and adapting as new information is introduced. DNA testing has proven beyond a reasonable doubt that over 100 people have been found to be falsely convicted in large part due to eye witness testimony that was in fact false. Eye witness testimony can easily become contaminated. In cases involving trauma the witness focuses more on the weapon and suggestive practices by police can cause errors in the testimony.
Research has shown the human memory is flawed and cannot produce exact recall. Instead, witness memory is like any other evidence at a crime scene; it must be preserved carefully and retrieved methodically, or it can be contaminated (Wells. 2007). In psychology many different research studies have been conducted to learn why the witnesses will select the wrong suspect especially when trauma is involved. High stress situations, such as a murder, armed robbery, or rape can cause eye witnesses testimony to become skewed.
Human memory is not a tape recorder and cannot be rewound to give a perfect account of what happened (Morgan, 2004). The brain will fill in areas were the memory is lacking cause the eyewitness misidentification to occur. Weapons focus is another discovered cause of eye witness testimony that is inaccurate. If a weapons is used the witness will focus more on the weapon and less on the face of the suspect causing any identification to be less than accurate because they only get glimpses of the face of the suspect. Next suggestive identification, which mostly occurs in the lineup stage, refers to actions by police of even the witness that result in a misidentification.
Research has shown a correlation between the lineup and the misidentification. Psychological factors in eye witness misidentification discovered include relative judgment and malleability of witness certainty. Relative judgment in correlation to the lineup refers to the tendency of the eye witness to compare the potential suspects with their memory of the incident. The witness will then select the person who appears to look like the suspect they viewed. If there is any stress of trauma involved the memory becomes even more susceptible to change.
The malleability of witness certainty refers to how certain the witness is when making the identification. The malleability of the witness will depend on their level of confidence they are making the right identification not based on memory but from cues by law enforcement suggesting their selection is correct. These cues can be verbal or nonverbal. Once the witness receivies confirmation they have selected th ...
Week 5 Mood and Anxiety Disorders in Children and AdolescentsRe.docxlillie234567
Week 5: Mood and Anxiety Disorders in Children and Adolescents
Reminders for WEEK 5:
· Required Readings & Media
· Assignment: Patient Education for Children and Adolescents
· To Prepare
· By Day 1, your Instructor will assign a mood or anxiety disorder diagnosis for you to use for this Assignment.
· Assignments:
Generalized Anxiety Disorder
· Medication: duloxetine (age 7–17)
· Research signs and symptoms for your diagnosis, pharmacological treatments, nonpharmacological treatments, and appropriate community resources and referrals.
· The Assignment - In a 300- to 500-word blog post written for a patient and/or caregiver audience, explain signs and symptoms for your diagnosis, pharmacological treatments, nonpharmacological treatments, and appropriate community resources and referrals.
RESEARCH ARTICLE
Case rethinking: a protocol for reviewing criminal investigations
D. Kim Rossmo*
Center for Geospatial Intelligence and Investigation, School of Criminal Justice, Texas State
University, San Marcos, TX, USA
Mistakes in decision-making have been identified as the most common type of error
in police investigations. Consequently, wrongful convictions and other types of crimi-
nal investigative failure may require a complete case ‘rethinking,’ particularly when
new evidence disrupts the existing theory. A rush to judgment resulting in a prema-
ture shift from an evidence-based to a suspect-based investigation can produce a
number of problematic thinking errors. Faulty assumptions, tunnel vision, groupthink,
and other cognitive biases and organizational traps hinder evidentiary interpretation
and evaluation. This article outlines a protocol for reviewing evidence and rethinking
a wrongful conviction or unsolved crime when the existing investigative theory
appears to be incorrect. The protocol involves four stages: (1) evidence; (2) interpre-
tation; (3) patterns; and (4) analysis.
Keywords: criminal investigation; police detectives; criminal investigative failures;
cold cases; wrongful convictions
Introduction
Police agencies increasingly use sophisticated forensic techniques and powerful
computers in their response to major crimes. What can sometimes be forgotten in this
emphasis on technology, however, is the need to properly think about the information
produced by these and other approaches. Police investigations require rational analysis
and logical thinking. When cognitive biases and organizational traps distort the
process, wrongful convictions and other types of criminal investigative failure can
result.
This article presents a case rethinking protocol that has been successfully used on
unsolved crimes and wrongful convictions. The focus is on inquiries of crimes, such as
murder, where what happened remains unknown. Reviewing a case often involves the
effort to discover new evidence; however, this method is concerned with rethinking
existing evidence. Aspects of the protocol may also be helpful in.
Week 5 Mood and Anxiety Disorders in Children and AdolescentsRe.docx
Simpson_Austin_Thesis Paper
1. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 1
The Role of Implicit Presentation in Eyewitness Testimony: Investigating Whether
Subliminal Priming Can Modulate Suspect Identification
A Senior Honors Thesis Presented to the Faculty of the Department of Psychology
University of Hawaii at Manoa
In Partial Fulfillment of the Requirements
for Bachelors of Psychology with Honors
By Austin Simpson
May 9, 2013
Committee:
Scott Sinnett, Mentor
Andrew Dewald
Marvin Chandra
2. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 2
Table of Contents
Table of Contents 2
Abstract 3
Introduction 4
• Influence of Suspect Lineup 4
• Fallibility of Explicit Memory Processes 5
• Implicit Effects on Recognition 7
Methods 9
• Participants 9
• Stimuli and Apparatus 9
• Procedure 11
Results 11
Discussion 12
References 19
3. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 3
Abstract
The criminal justice system relies heavily on eyewitness testimony for the prosecution
and investigation of criminals. Extensive research has shown that post-event information
can severely alter or reconstruct memory. However, despite empirical evidence
demonstrating that implicitly presented information can influence memory and behavior,
no research has been conducted regarding the ability of information that is presented
below conscious awareness to modulate eyewitness identification. This is precisely what
was investigated in the current manuscript. Participants were instructed to watch a short
video that depicted a man committing a crime, and were then required to identify the
culprit out of a sequential lineup presented on a computer screen. The color of the shirt
that each suspect wore was systematically primed by a subliminally presented color
word. Critically, the color prime either did, or did not match the color of the shirt that the
suspect wore. The findings showed a very high false identification rate, with more than
90% of participants falsely choosing a suspect, despite the actual culprit never being
shown. Contrary to expectations, when compared to chance levels participants did not
choose suspects more frequently if they had been implicitly primed with a matching color
word. Given the powerful determinants of memory bias, the present findings could be of
interest to the criminal justice system.
Keywords: Eyewitness testimony, false memory, misinformation, priming,
recognition
4. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 4
The Role of Implicit Presentation in Eyewitness Testimony: Investigating Whether
Subliminal Priming Can Modulate Suspect Identification
Eyewitness testimony can be extremely important in the justice system.
However, research from the past 40 years has demonstrated that eyewitness memory can
be flawed, sometimes leading to the unfortunate incarceration of innocents. For instance,
in 1984 Frederick Rene Day was identified from a suspect lineup and served ten years in
prison for rape and kidnapping. Day was released in 1994 after DNA testing revealed his
innocence. The rape victim and another witness both falsely identified Daye as the
kidnapper and rapist, leading to his conviction. While this is just one of many cases,
much research has shown the fragility of human memory when it comes to eyewitness
testimony. For example, laboratory studies where perpetrators are shown on video
(Gronlund & Carlson, 2009), live field experiences (Pryke, Lindsay, Dysart, & Dupuis,
2004), and archival studies with real criminal cases (Behrman & Davey, 2001) have all
consistently demonstrated the fallibility of eyewitness memory. In the real world, the
development of new DNA techniques has revealed many cases of wrongful imprisonment
in which the accused had been found guilty largely based on memory errors by witnesses,
but were subsequently exonerated. Before addressing specific components of memory
and how it can be influenced in the context of eye witnessing an event, it is important to
discuss how different aspects of the process of being an eyewitness can modulate
memory.
Influence of the Suspect Lineup
One way in which memory can be influenced is by systematic variables – factors
controlled by the criminal justice system. For instance, the criminal justice system can
administer lineups in such a way that leads to false recollection of an individual and, at
5. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 5
times, false accusation. Hence, the content and presentation method of a lineup pose a
significant threat to the reliability of an eyewitness account. Police integrators often
manipulate the structure of the eyewitness lineup, such as deliberately omitting the
perpetrator from the lineup or presenting suspects in a sequential or simultaneous
manner. Lindsay and Wells (1985) were the first to demonstrate the superiority of
presenting a lineup in a sequential manner. Results of their study showed that subjects
made fewer errors in a sequential lineup than a simultaneous lineup (correctly ID
subjects). Others have confirmed similar results concluding that sequential lineups lead to
lower rates of false identifications (Steblay, Dysart, Fulero, & Lindsay, 2001; but see
Carlson, Gronlund, & Clark, 2008 for a counter example). However, the advantage of
sequential lineups is mediated by how much the innocent subject stands out from other
lineup members (Carlson et al., 2008; Gronlund & Carlson, 2009).
A further systematic variable that can influence identification rates is whether or
not the actual culprit (i.e., guilty individual) is present in the lineup. It is important for the
administrator to inform the witness that the perpetrator of the crime may or may not be
present. If not, witnesses often falsely identify a suspect, arguably due to some sort of
expectation to be required to choose someone, leading to the witness choosing the person
in the lineup who most closely resembles the real perpetrator. This was exemplified in a
study by Wells (1992) where 54% of witnesses identified the correct culprit from a
culprit-present lineup while 21% made no identification. However, when researchers
removed the culprit, 68% of subjects falsely identified someone and 32% of people did
not identify anyone (Wells, 1992; see also Ebbesen & Flowe, 2002; Clark, 2009). Seeing
that the absence of a perpetrator leads to high levels of false identifications, the current
study did not include the perpetrator in the lineup.
Fallibility of Explicit Memory Processes
Typically, memory can be fundamentally thought of as a constructive process,
6. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 6
rather than a replay of life events. The recollection of an explicit memory is often one of
the most powerful, yet inaccurate sources in eyewitness testimony. Questions concerning
the nature of memory systems have been at the forefront of cognitive research. In
eyewitness testimony research, for instance, one of the reasons why error rates are so
high is that incorrect information presented after the event (post event misinformation;
PMI) can impair memory of the original event. For instance Loftus (1974) developed a
landmark theory called the “misinformation effect” to explain how exposure to PMI can
create false memories. In her experiment, participants watched a video clip of a car
accident. Participants were later asked questions that either embellished the event or
provided a more accurate portrayal (i.e., how fast were the cars moving when they
(smashed vs. hit) into each other?). The results showed that participants who received
questions containing the word smashed indicated higher speeds when compared with
participants who had the word hit in the questions. More importantly, when asked to
return to the laboratory a week later, those participants who had received the verb
smashed again recalled the cars to be moving faster, but also more frequently recalled the
presence of broken glass (there was none). In sum, PMI later influenced memory retrieval
and lead to false memories. The robustness of the misinformation effect has been found
in a variety of other studies involving a multitude of materials and techniques (Schreiber
& Serget, 1997).
One of the possible mechanisms driving the misinformation effect could be
retroactive interference, which suggests that new information potentially conflicts or
overrides previously learned information, thus forming a new reconstructed or
reconsolidated memory, often different from objective events. This is especially
dangerous when considering eyewitness memory, as false recognition is often
accompanied by high confidence and detailed, albeit false recollection (Roediger, 1990;
Shaw, 1996). Despite the robustness of studies using explicit memory paradigms, implicit
memory has received little attention in the false memory literature.
7. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 7
Researchers have focused on the distinction between explicit and implicit forms
of memory. Explicit or declarative memory refers to the conscious recollection of events
or experiences. In contrast, implicit or non-declarative memory refers to changes in
behavior or performance elicited by prior experiences for which one has no conscious
awareness. For instance, priming experiments (discussed in more detail below) often
involve the below threshold presentation of stimuli, that despite not leading to conscious
awareness, can nevertheless influence later memory and behavior (Dehaene et al., 1998).
While implicit priming has been robustly demonstrated in the literature (see for example
Kirsner & Smith, 1974; McDermott, 1997), its role in in eyewitness identification has yet
to be explored.
Implicit Priming and Recognition
Priming refers to the phenomenon when the exposure to a prior stimulus effects
the identification of a similar or identical target that is presented later (see for example
Tipper, 1984). The initial stimulus is known as the prime or cue, and has nothing to do
with the actual task of responding to a later stimulus, known as the target. Furthermore,
the prime is often presented subliminally (i.e., below conscious awareness). Critically,
when the cue and target are related, the target is responded to more efficiently,
demonstrating implicit memory. For instance, evidence for the benefits of priming1
have
been observed on tasks such as word completion, lexical decision-making, and semantic
comparisons (Kirsner & Smith, 1974; Warrington & Weiskrantz, 1968; Dehaene et al.,
1998) to name but a few.
Of direct interest to eyewitness memory, the relationship between priming and
face recognition using identical or similar stimuli has been explored, and found to
facilitate identification. That is, robust evidence corroborates the notion that the repeated
1
However, it should be noted that some research has also shown that a prime can slow
down processing of the target (i.e., negative priming, see Tipper, 1985 for example).
Regardless, both facilitation and inhibition demonstrate that the subliminally presented
prime can influence behavior.
8. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 8
exposure to primed faces improves reaction time and accuracy in facial recognition tasks
(Dell’Acqua & Grainger, 1999; Joyce & Kutas, 2005; see also McDermott, 1997 for a
similar example using written words). More importantly, past research has found that
misleading subliminal information can induce false recognition, such as through
repetition priming (Jacoby & Whitehouse, 1989). Jacoby and Whitehouse (1989)
instructed participants to study a wordlist and then presented a recognition test, which
contained words from the original list or new words. Critically, the presentation of a
subliminal word preceded each recognition item that either matched or did not match the
target. Results indicated that participants falsely recognized “new” words as “old” when
primed with words that matched. In the current study, implicit primes (color words) that
were related to (or not) the color of a shirt worn by a suspect were used to assess the
possibility that the implicit prime could influence eyewitness identification. We
deliberately masked the priming stimuli (to eliminate conscious awareness) to explore
whether information presented below threshold can affect recognition of complex stimuli
(i.e., the face of a suspect after viewing a video of a crime). While this type of complexity
is rare in priming paradigms, it is rather applicable to eyewitness testimony, and a
behavioral effect of subliminal stimuli may provide further explanatory power for the
potency of implicit memory. This may open the window for practical applications
examining the nature of misleading questions, eyewitness depictions of an event, and
lineup factors that might be unknowingly perceived.
There are two main objectives that were explored in this honors thesis: First, to
explore whether priming individuals with below threshold (i.e., subliminal) misleading
information can modulate the rate of identification. In other words, can implicit
information lead people to falsely recognize a culprit? The second question explores
whether people will choose someone regardless if the culprit was present in the suspect
lineup. Based on previous research, one could hypothesize that participants will not only
9. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 9
identify a perpetrator but also choose suspects whose shirt color matches a subliminally
primed and matching color word.
Methods
Participants
Undergraduate students (n=61) from the University of Hawaii at Manoa were
recruited from psychology classes to participate in the study as an opportunity for extra
credit. All participants gave informed consent prior to participating in the experiment.
The experiment was approved by the University of Hawaii at Manoa Committee on
Human Studies.
Stimuli & Apparatus
The experiment was conducted at the Attention and Perception Laboratory at the
University of Hawaii at Manoa. Three MacBook computers were used to perform the
experimental trials using the Psyscope XB7 graphical user interface software program.
The mock video was adopted from a previous experiment done by Gronlund & Carlson
(2009). The video lasted approximately 1 min and 45 seconds and depicted a scene of a
couple walking on a street, hugging, and then walking across the street (see Figure 1).
Intermixed among the scenes was the perpetrator getting out of his car and hiding in the
bushes. As the woman approaches her car, the perpetrator jumps out of the bushes, steals
the purse, and runs off.
Suspect lineup: Pictures were acquired from a selection of Facebook profile pictures from
friends of the author. Five photos were obtained (see Figure 2) and all people approved
the use of their photo for the purposes of the experiment. Using Photoshop, each photo
was changed such that the color of the shirt could be different (either red, black, blue,
10. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 10
green, or yellow), making a total of 25 pictures total (i.e., the five pictures with five
different colored shirts).
Priming Stimuli. The different colors of the shirts (red, blue, yellow, black, and green)
were presented in written format immediately before the presentation of each photo. The
color words were presented for 13 ms and then masked for 50 ms by random symbols in
order to ensure that the words were presented subliminally. No participants expressed
awareness of the words. The author, advisor, and numerous classmates were unable to
determine the identity of the prime when awareness was informally tested. Each trial
began with a fixation cross (750 ms), immediately followed by the prime word (13 ms),
which was then followed by a mask (50ms). The mask was composed of symbols that
systematically replaced letters (e.g., %#@*). The combination of shirt color, person, and
prime was pseudorandomized. In order to more closely replicate real world lineups, each
participant was given five congruent trials (prime matches shirt color) and 20 incongruent
trials (prime did not match shirt color).
Figure 1: Still frame of a scene shown in the video. This scene depicts the perpetrator just
after stealing the woman’s (standing by the trees) purse and running off.
11. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 11
Figure 2: Presentation of the suspect lineup (in the experiment, suspects were shown
sequentially). Note, each suspect is wearing a different shirt color than the next.
Procedure
Participants first watched a short video clip of a man stealing a woman’s purse.
Immediately following the video, subjects were sequentially shown the twenty-five
pictures and asked to identify the perpetrator with a ‘Y’ or ‘N.’
Results
Overall, 91% of the participants falsely identified someone in the lineup with an
average 22% detection rate (i.e., a suspect was identified on 22% of trials). Of key
importance is the congruency analysis. First, participants chose the suspect with the
congruent matching (prime word to shirt color) only 5% of the time, while they chose the
suspects with incongruent matchings 18% of the time. However, despite the obvious
difference, the initial presentation involved a ratio of 1:4 in favor of incongruent
matchings. Therefore, in order to more accurately analyze this, the number of times a
participant falsely identified a suspect was calculated based on congruency and then
compared to what would have been expected by chance (see Figure 4). For instance, if a
participant had chosen the congruent matching suspect (i.e., prime matched color of shirt)
on 2 of the 5 trials, then the congruency score for that participant would be 40%. When
doing so, a congruent matching was chosen 20.1% of the time and an incongruent
matching was chosen 79.9% of the time (see Figure 3). Note, this is nearly identical to
12. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 12
the ratio of congruent to incongruent matchings (1:4), and did not differ significantly
when compared to this baseline rate (p >. 05).
Figure 3: Mean performance (ID %) for subjects across all compatibility vs.
incompatibility trials.
Figure 4: Percentage of compatible and incompatible responses compared to the level of
expected chance.
Discussion
There are two main findings that merit discussion. First, our underlying question
was to determine if information presented at the implicit level had the ability to impact
facial recognition in an eyewitness testimony paradigm. The findings suggest that this
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13. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 13
was not the case. That is, participants did not more frequently choose the primed suspect
more often than non-primed suspect. Second, nearly all participants (91%) erroneously
identified a perpetrator despite the fact that a culprit-absent lineup was used. This latter
finding is of importance as it shows the propensity of participants to falsely identify an
individual.
The lack of any influence of the implicitly presented prime is intriguing, as
research typically finds a facilitation in performance when identifying previously primed
stimuli. For instance, Dehaene et al. (1998) used a number priming paradigm and asked
participants to classify target digits as either greater than or less than five. Importantly,
preceding the target a masked digit was presented that was also either above or below
five. Dehaene et al. (1998) observed faster and more accurate responses for congruent
prime-target matchings (i.e., when both prime and target were either above or below five)
when compared to incongruent matchings (i.e., when prime was above five and target
below five, or vice versa), despite the lack of conscious awareness of the prime.
These priming effects are not related to only low-level stimuli. Indeed,
Dell’Acqua and Grainger (1999) examined the effects of unconsciously presenting
picture primes on semantic identification and naming responses on both word and picture
targets. They found that when targets belonged to the same semantic category as the
prime, responses were faster compared to different category primes. Thus, it is interesting
that the present research did not observe any priming effect. It should be noted however,
that the stimuli used here were much more complex than previously used. That is, this is
the first experiment to use an eyewitness paradigm, requiring participants to view a video
of a crime and then identify suspects from a lineup, with the inclusion of primes. It could
be the fact that an identification decision might not be susceptible to implicit priming,
although further research is needed to support such a claim.
While the research described above supports the notion that a prime will facilitate
performance, there are instances when the reverse occurs, that is an inhibition for primed
14. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 14
stimuli. When this occurs the majority of research posits that stimuli must be presented
supraliminally or above conscious awareness (see for example Allport et al., 1985; also
see Eimer & Schlaghecken, 2003). Evidence for this has been found in a number of
studies investigating negative priming (Allport et al., 1985) and voluntary or involuntary
shifts in spatial attention (McCormick, 1997). These studies have employed stop signal or
go/no-go tasks, which require participants have to refrain from responding when
presented with a specific signal. Findings such as these have lead to the prediction that
implicitly presented material can affect behavior, however, the subliminal presentation of
our stimuli did not lead to the predicted facilitation.
A related experiment conducted by Eimer and Schlaghecken (2003) displayed
primed stimuli for 16ms, immediately followed by a mask (100ms), and then by a target
(100ms) requiring a left or right hand response. The data revealed a striking pattern of
results. Error rates were lower and a faster RT was observed in the incompatible
condition, whereas slower RTs and higher error rates were found in the compatible
condition. This phenomenon is known as the negative compatibility effect and has been
robustly demonstrated in the literature (see also Eimer, 1998, 1999; Eimer &
Schlaghecken, 2001). It should be noted, that the negative compatibility effect is the
opposite of what we would have hypothesized. However, it is important to point out that
the implicit prime did lead to an effect in Eimer and Schlaghecken’s (2003) experiment.
It is difficult to speculate as to why a null result was observed here. In similar
research, one possibility pertains to the idea that previous research used mostly simple
stimuli devoid of real world complexity. It is possible that the use of faces here, or the
video prior to the presentation of the experiment, somehow negated any priming effect on
memory. Despite some research claiming facilitatory effects in complex semantic
associations (Dell’Acqua & Grainer, 1999), the majority of research relies on recognizing
simple target stimuli that hold a strong association with the prime. Our experiment relied
on higher-level decision-making (i.e., attaching guilt to a suspect), which may not have
15. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 15
adequately transferred from our priming mechanism. Furthermore, adequate attention
may not have been captured by the shirt color of the suspect, and therefore was not fully
processed or even perceived. Consequently, our subliminal information may not have
been sufficiently relevant to the task, weakening the efficacy of the prime, and therefore
restricting any facilitating effect. This suggests that only activation caused by strong and
simple implicit presentation will cross the threshold and trigger a response.
One potential complication in the present experiment would be whether or not the
prime was truly subliminal in nature. It is possible that some participants might have
observed it while others did not, perhaps leading to opposing trends in the data canceling
each other out. This is unlikely as two procedures were undertaken to ensure that our
prime stimuli were presented outside of conscious awareness. First, although we chose a
prime of a different visual property (words) than the target stimulus, a post-presentation
mask was used. And second, prior to our formal experimental trials, we repeatedly pre-
tested (duration and font size) our masking and priming stimuli during a pilot session to
ensure there was no detection of the priming color or masking stimulus. Also,
immediately following the pilot trials, participants stated that they were unable to
consciously detect or discriminate the masked primes. Although, it should be noted that a
complete pilot test was not conducted, and therefore this remains a small, albeit potential
possibility.
Only a small subset of participants (9%) failed to exhibit any false identification.
That is, more than 90% of participants incorrectly chose someone who was not the
culprit. This dovetails with prior research (e.g., Wells, 1993) showing a high false
identification rate. Interesting, a sequential lineup was used here, and we nevertheless
observed a high rate of false identification. Traditionally, the false identification rate
increases when using simultaneous lineups, likely due to the use of relative-judgment
when identifying suspects. The relative-judgment notion states that an eyewitness often
16. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 16
selects a suspect from the lineup who closely resembles the eyewitness’s memory of the
culprit relative to the other lineup members (Olson & Wells, 2003). The problem
becomes readily apparent when we observe the process under a culprit absent lineup.
Therefore, the relative judgment process may yield a positive identification when
someone possesses more resemblance to the culprit, compared to the other lineup
members. A sequential lineup was specifically employed here in an attempt to avoid any
subjective comparisons, utilizing past research demonstrating the robustness of the
sequential lineup advantage (Steblay et al., 2001). Theoretically, eyewitnesses use an
absolute judgment process in a sequential lineup, in which lineup members are compared
directly to the witness’ memory of the culprit, instead of other lineup members in a
simultaneous lineup. Thus, it is noteworthy that such a high false identification rate was
still observed.
In addition to the use of the sequential lineup, the culprit was not included in the
lineup to further explore the possibility of false identification in culprit-absent lineups.
Our instructions were simply to identify the perpetrator, with no indication if the culprit
was actually in the lineup. Other studies have demonstrated the improvement of
eyewitness reports (i.e., lower false identification rates) when participants are warned that
the suspect might not be in the lineup (Malpass & Devine, 1981). Despite the slightly
misleading nature of our design, our procedure was neither coercive nor suggestive; with
all participants having the opportunity to not select anyone. Regardless, it should be
noted that the principle aim of our study was not to examine systematic variables and
manipulate lineup properties, but rather determine the influence of information presented
below conscious awareness.
17. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 17
It is necessary to point out that the current study has some important implications
when evaluating eyewitness testimony. At the forefront, the viewing pool of potential
suspects was substantially narrow. That is, our suspect lineup was relatively small and
limited, thus raising the possibility for biases due to prior exposure of frequently
presented photographs. Furthermore, it is possible that repeated exposure to the same
photos caused participants to identify the same photo regardless if another suspect
resembled the perpetrator. Dysart, Lindsay, Hammond, and Dupuis (2001) coined the
term “the commitment effect” which essentially states that if a witness chooses a face
from a set of photographs and this face reappears in the suspect lineup, the witness will
choose that face again, exhibiting a feeling of commitment to the prior choice. Although,
it should be noted that this argument holds little weight here given that there was no
preference was for any single picture, as demonstrated by the almost exact chance results.
Memory research is especially important for the investigation of the judicial
process, since many trials revolve around eyewitness accounts. Priming may have
practical value for eyewitness testimony given that it is often more impressionable and
persistent than other forms of explicit memory (Joyce & Kutas, 2005) and can be
extremely durable and resilient (Shacter, 1992). Moreover, in order to more directly
investigate the potential of implicit memory, other studies are encouraged to examine
external properties of the event such as organization of information, causal and spatial
temporal relationships, and previous knowledge, which could possibly have rendered
actions of the event resistant to facilitatory and inhibitory processes (Eimer, 1999). The
current system exclusively relies on long term, declarative retention of faces after
exposure to a suspect lineup, even though it has been shown that this type of memory is
often very malleable and susceptible to misidentification.
In sum, the present research affirms the ability for human memory to be
18. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 18
reconstructed based on post-event information, as more than 90% of participants falsely
identified a suspect. At the same time, it appears that subliminal priming did not have any
influence on suspect identification. Despite these results, it is still vitally important to
examine the role of implicit information in the context of eyewitness testimony due to the
vast amount of information eyewitnesses unconsciously perceive and the ability for that
information to influence memory and decision making.
19. RESPONSE RECOGNITION IN EYEWITNESS TESTIMONY 19
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