3. •Also known as Lie Detector.
•Polygraph testing combines interrogation with physiological
measurements obtained using the polygraph, or polygraph instrument,
a piece of equipment that records physiological phenomena—typically,
respiration, heart rate, blood pressure, and electrodermal response
(electrical conductance at the skin surface)
•History-(1902)James McKenzie
(1921)John Larson
(1925 )Leonard Keeler
•It is based on principle of psychosomatic interaction of an individual
•Analysis through polygraph chart .
5. •A diagnostic and psychotherapeutic technique that uses psychotropic
drugs.
•It involves the injection of drugs which take a person in to different
stages on anaesthesia in which the individual may be less inhibited and
therefore likely to reveal information when questioned
•first time used by Robert House ( 1922), Texas obstetrician, used the
drug supolanyne on two prisnoers.
•American armed forces and intelligence agencies continued to
experiment with truth drug mostly barbiturate during and after war
6. 2002,Godhra carnage
Abdul karim telgi 2003
Nithari serial killings
Shimla rape case
Aarushi murder case
7. Invented by Lawrence Farwell
It is a technique that uses electroencephalography
(EEG) to determine that a specific information
stored in subjects brains
It measures and records persons electrical brain
waves and there brain responses
P300-MERMER (memory and encoding related
multifaceted electroencephalographic responses)
8. Harrington case (innocent
man freed after 24yrs in
prison)-prison for murder
Terry Harrington, in 1977, 17
year boy was arrested for the
murder of John schweer , a
retired police captain who had
been working as a security
guard.
On 26 Feb,2003- lowa
supreme court-reversed his
murder conviction and
ordered a new trial
Oct,2003- state of lowa
elected not to re try Mr.
Harrington and released him
from prison
9. Methodology was developed by Champadi Raman mukundan,
a neuroscientist , former professor and head of clinical
psychology at the national institute of mental health and
neurosciences Bangalore ,India.
Brain electrical oscillation signature (BEOS) is used to assess
the suspect to find out whether he or she involved particular
criminal act or not
It is a technique for extracting an electrophysiological
signature of an experience during its remembrance the
electrical oscillations/activity related to the remembrance is
called the signature
The results of BEOS are obtained in form of electrical activity
from the brain related to probes the brain waves indicates
that the brain has some information in regard to this items
10. Case of a Young Salesman
Case of Arsenic Poisoning
Case of a Murder of an Employee
Case of 5 Murders in a Family which
included a Female and 4 Children
Case of Murder of an Entire Family
Case of Serial Murders of Street
Dwellers
Case of Serial Murders of women and
children in an Indian Village
Case of an Attack in Revenge
Case of Murder in a Family Fight
Case of Murder of a School Teacher
11. “The Hypnotist does not Hypnotize the Individual” - John
Kihlstrom
Hypnosis is used to enhance the memory of a witness to a
crime often results not only in sub-additional accurate recall
of the information about the event but also in the
incorporation of additional misinformation into the witness’s
memory of the event
State of altered consciousness
Decreased activity in the muscles, slowed breathing and heart
rate but the mind and senses become more alert and
memoires become ore accessible.
12. Albert desalvo
,from1962-1964
thirteen women were
killed
He was interrogated for
more than 50 hrs under
hypnosis
He revealed the truth
and other details murder
that he didn’t know
otherwise.
Police psychiatrist
believe albert eas
moving through
psychosexual stages.
13. Eye witness- a person who actually sees some occurrence or
thing and give a first hand account of it.
Ear witness- a person who gives evidence or information about
heard rather than seen.
Interview procedure The following is an example of a sequence
to conduct the interview:
Attempt to minimize the witness's anxiety.
Establish and maintain rapport.
Encourage the witness to take an active role in the interview.
Request a free narrative description of the incident.
Ask the witness to mentally recreate the circumstances of the
incident.
Ask followup questions to elicit additional information related to
the witness's narration.
Review your notes and other materials.
Ask the witness, Is there anything else I should have asked you?
Close the interview.
14. American journal of psychiatric,
ajp.psychiatriyonline.org
http://larryfarwell.com
Thenewsminute.com
www.polygraphis.com
https://www.ashpreetpro.com/brain-
fingerprinting/
(all accessed on 4/4/19)
