This document provides an overview of studies on human-primate communication. It discusses the history of primatology and several key figures. It then examines different approaches to studying primate language abilities, including signing with gorilla Koko, using symbols with chimpanzees, and a lexigram system with bonobos Kanzi and Panbanisha. While the apes showed some understanding of language in these studies, the document argues they did not demonstrate full grammatical communication abilities or an understanding of deeper meanings. Anthropomorphization of the apes' behaviors is a common issue across studies.
Tracking the depictions of animals in children's literature through history reveals not only what authors think about animals, but also what they think about the human experience and of childhood itself. As the word "animal" can be used both to mark the similarities and the differences between beasts and men, it makes sense then that animals depicted in children's literature may do the same. Animals in children's literature may be wholly animalistic, they may act as symbols, they may traipse around in human clothes and perform human actions, or they may also represent racial and other differences. Similarly, child characters may be so feral they act as animals or desire to be one. Considering such depictions of animals (and animalistic children) in children's literature provides the opportunity for thinking about how children understand and negotiate their identities in the world.
Tracking the depictions of animals in children's literature through history reveals not only what authors think about animals, but also what they think about the human experience and of childhood itself. As the word "animal" can be used both to mark the similarities and the differences between beasts and men, it makes sense then that animals depicted in children's literature may do the same. Animals in children's literature may be wholly animalistic, they may act as symbols, they may traipse around in human clothes and perform human actions, or they may also represent racial and other differences. Similarly, child characters may be so feral they act as animals or desire to be one. Considering such depictions of animals (and animalistic children) in children's literature provides the opportunity for thinking about how children understand and negotiate their identities in the world.
Intelligent Design involves critical thinking and has provided to biological anthropology as:
Repackaging of science
Power of irreducible complexity
Unseen Being/Power
Creationism-Evolution relationship.
Again,
Science is a process, not a result.
Da Silva et al 2014 - Marvel and DC characters inspired by arachnidsElidiomar R Da-Silva
This article compares arachnid-based Marvel and DC comics characters. The composition of a comic book character often has interesting ‘real-life’ inflences. Given the strong connection between arachnids (especially spiders, scorpions and mites, all belonging to the zoological class Arachnida) and human beings it is not surprising that they have inspired many fitional characters. We recorded 84 Marvel Comics characters and 40 DC Comics characters, detailed in the dataset that accompanies the article. Most characters have been created recently, since the 1990s. Marvel has signifiantly more arachnid characters than DC. As for taxonomic classifiation, the characters were based mostly on spiders (zoological order Araneae). Of the total characters, the majority are human beings, but an overwhelming number have at least some typical arachnid features. Villains (60.91% of total) are signifiantly more numerous, considering the sum of the two publishers. Arachnids have bad reputation for being dangerous. Since the public
usually considers spiders, scorpions and mites “harmful” in general, we expected a larger contingent of villains. However, there was no statistical diffrence between the amount of villains and heroes in Marvel characters. It did not happen probably due to the success of one character: the Amazing Spider-Man.
Intelligent Design involves critical thinking and has provided to biological anthropology as:
Repackaging of science
Power of irreducible complexity
Unseen Being/Power
Creationism-Evolution relationship.
Again,
Science is a process, not a result.
Da Silva et al 2014 - Marvel and DC characters inspired by arachnidsElidiomar R Da-Silva
This article compares arachnid-based Marvel and DC comics characters. The composition of a comic book character often has interesting ‘real-life’ inflences. Given the strong connection between arachnids (especially spiders, scorpions and mites, all belonging to the zoological class Arachnida) and human beings it is not surprising that they have inspired many fitional characters. We recorded 84 Marvel Comics characters and 40 DC Comics characters, detailed in the dataset that accompanies the article. Most characters have been created recently, since the 1990s. Marvel has signifiantly more arachnid characters than DC. As for taxonomic classifiation, the characters were based mostly on spiders (zoological order Araneae). Of the total characters, the majority are human beings, but an overwhelming number have at least some typical arachnid features. Villains (60.91% of total) are signifiantly more numerous, considering the sum of the two publishers. Arachnids have bad reputation for being dangerous. Since the public
usually considers spiders, scorpions and mites “harmful” in general, we expected a larger contingent of villains. However, there was no statistical diffrence between the amount of villains and heroes in Marvel characters. It did not happen probably due to the success of one character: the Amazing Spider-Man.
Succession “Losers”: What Happens to Executives Passed Over for the CEO Job?
By David F. Larcker, Stephen A. Miles, and Brian Tayan
Stanford Closer Look Series
Overview:
Shareholders pay considerable attention to the choice of executive selected as the new CEO whenever a change in leadership takes place. However, without an inside look at the leading candidates to assume the CEO role, it is difficult for shareholders to tell whether the board has made the correct choice. In this Closer Look, we examine CEO succession events among the largest 100 companies over a ten-year period to determine what happens to the executives who were not selected (i.e., the “succession losers”) and how they perform relative to those who were selected (the “succession winners”).
We ask:
• Are the executives selected for the CEO role really better than those passed over?
• What are the implications for understanding the labor market for executive talent?
• Are differences in performance due to operating conditions or quality of available talent?
• Are boards better at identifying CEO talent than other research generally suggests?
Rifkin, A Change of Heart about Animals”They are more like us t.docxmalbert5
Rifkin, “A Change of Heart about Animals”
They are more like us than we imagined, scientists are finding
Jeremy Rifkin, Los Angeles Times, September 1, 2003. Rifkin is an American economist whose work explores the way science and technological change influence the economy, jobs, culture, and the environment. In a 1989 interview published in Time Magazine, Rifkin argues against some technologies, claiming that in America,[w]e’re so skewed toward efficiency that we’ve lost our sense of humanity. What we need to do is to bring back a sense of the sacred.”
[1] Though much of big science has centered on breakthroughs in biotechnology, nanotechnology and more esoteric questions like the age of our universe, a quieter story has been unfolding behind the scenes in laboratories around the world — one whose effect on human perception and our understanding of life is likely to be profound.
[2] What these researchers are finding is that many of our fellow creatures are more like us than we had ever imagined. They feel pain, suffer and experience stress, affection, excitement and even love — and these findings are changing how we view animals.
[3] Strangely enough, some of the research sponsors are fast food purveyors, such as McDonald's, Burger King and KFC. Pressured by animal rights activists and by growing public support for the humane treatment of animals, these companies have financed research into, among other things, the emotional, mental and behavioral states of our fellow creatures.
[4] Studies on pigs' social behavior funded by McDonald's at Purdue University, for example, have found that they crave affection and are easily depressed if isolated or denied playtime with each other. The lack of mental and physical stimuli can result in deterioration of health.
[5] The European Union has taken such studies to heart and outlawed the use of isolating pig stalls by 2012. In Germany, the government is encouraging pig farmers to give each pig 20 seconds of human contact each day and to provide them with toys to prevent them from fighting.
[6] Other funding sources have fueled the growing field of study into animal emotions and cognitive abilities.
[7] Researchers were stunned recently by findings (published in the journal Science) on the conceptual abilities of New Caledonian crows. In controlled experiments, scientists at Oxford University reported that two birds named Betty and Abel were given a choice between using two tools, one a straight wire,
the other a hooked wire, to snag a piece of meat from inside a tube. Both chose the hooked wire. Abel,
the more dominant male, then stole Betty's hook, leaving her with only a straight wire. Betty then used her beak to wedge the straight wire in a crack and bent it with her beak to produce a hook. She then snagged the food from inside the tube. Researchers repeated the experiment and she fashioned a hook
out of the wire nine of out of 10 times.
[8] Equally impressive is Koko, the 300-p.
About Ethological theories of human development. What is Ethological theory?
different ethological theories.
1. Charles Darwin theory of evolution- Natural selection and its critiques.
2.Filial imprinting experiment by Lorenz and Tinbergen and its critiques.
3. Theory of attachment by John Bowlby- phases of attachment development, critiques of attachment theory
‘Jane Eyre’ Essay | Teaching Resources. Jane Eyre: Chapter 26 Essay - GCSE English - Marked by Teachers.com. Jane Eyre - GCSE English - Marked by Teachers.com. Jane Eyre-Red room English essay - GCSE English - Marked by Teachers.com. Jane Eyre Essay - GCSE English - Marked by Teachers.com. An Essay on Jane Eyre | Jane Eyre | Brontë Family. Jane Eyre and the Search for Independence: [Essay Example], 2131 words .... Jane Eyre Essay 1 | PDF | Jane Eyre | Virtue. Victorian Novel Analysis:Jane Eyre by Charlotte Bronte: [Essay Example .... The Essay - Jane Eyre | Jane Eyre. Jane Eyre by Charlotte Bronte Essay Example | Topics and Well Written .... Jane Eyre Essay | Year 12 VCE - English Literature | Thinkswap. Amazing Jane Eyre Essay ~ Thatsnotus. Bluebeard and Jane Eyre essay | English (Extension 1) - Year 11 HSC .... Jane eyre - GCSE English - Marked by Teachers.com. A comparative essay on "Frankenstein" and "Jane Eyre". - WriteWork. 35+ Jane Eyre Thesis Examples Most Popular - Exam. Jane eyre critical essay - reportz515.web.fc2.com. Jane Eyre Chapter Two Close Read, Quiz, and Essay Prompt | Essay .... Essay-eh: Jane Eyre for the 21st century. Character analysis essay on jane eyre - writerkesey.x.fc2.com.
Animal Cruelty Essay examples
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UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
Wyatt hilyard position paper
1. Hilyard 1
Wyatt Hilyard
M. Scoggin
ANTH 410
April 19, 2013
Overview of Studies on Human-Primate Communication
Abstract
Primatology, a subdivision of biological anthropology, has many definitions and uses. To
some, it is a study of primates on their own, separate from human evolution and ethology. Most
modern and historical primatology research, however, is linked to human evolution behavioral
studies. One of the major interests of this kind of research is human-primate communication. In
this paper I will argue that the great apes are capable of understanding and utilizing human
language to some extent. The degree to which each species is ultimately able to communicate
with humans will be shown using case studies. I will also argue that both views of the discipline
are valid, but must be kept separate in order to maintain scientific integrity.
A Brief History of Primatology
Before we talk about primate language studies, it is important to understand the history of
the relatively new science of primatology. Many consider Robert Yerkes to be the founder of
primatology, publishing several animal psychology works in the early to mid 20th
century. In the
early 1920's, inspired by a recent trip to primate research facilities in Cuba, he bought two
chimpanzees from a local zoo in Pennsylvania and raised them in his home. The methods he used
are viewed by many as unscientific and unethical, but there was little objection at the time. He
founded the first research laboratory specific to primate research in 1929. Being primarily a
2. Hilyard 2
psychologist, Yerkes' most notable work was outside primatology. In the mid 1910's, he created a
series of alpha/beta tests that turned into IQ tests given to the U.S. Army, and ended up being
used to fuel the debates on immigration restriction in 1924. Yerkes claimed his tests measured
native intelligence, but the way they were formulated unintentionally relied on a certain amount
of education and cultural knowledge. His personal and professional views on hereditary eugenics
and intelligence make him unpopular today. His work is often discredited due to the inherent
influence those views had on his research and interpretation of his findings. Regardless of both
areas of politically-incorrect research, he is still viewed as a sort of pioneer of primatology. The
Yerkes Regional Primate Research Center is still fully-functioning, and his name has been used
in tribute to refer to a form of symbolic primate language, Yerkish, which will be discussed later
in this paper.
“Leakey's Angels” is a term used to refer to three pioneering female primatologists: Jane
Goodall (chimpanzees,) Dian Fossey (gorillas,) and Birute Galdikas (orangutans.) All three
recieved a substantial amount of funding and publicity from Louis Leakey, a major figure in
archaeology and paleoanthropology. Goodall was the first of this group, and probably the most
publicized primatologist to date. She started her field work in 1960 in Tanzania, then
Tanganyika. She is often criticized by modern primatologists for her training and methodology.
She had no scientific field training; she was a secretary. In her field work she greatly
anthropomorphized the individuals in the group she studied. This drew popularity to her work
(people love stories of cute chimps running around and creating mischief,) but was a hindrance
to the emerging science of primatology. For decades after it was impossible to get funding if your
field work didn't have some sort of tie to human evolution. I think part of that stems from the fact
3. Hilyard 3
that Louis Leakey's work was human evolution, and that concept was unintentionally attached to
the first major steps in popular primatology. That, coupled with anthropomorphization on the part
of the scientists, hurt the discipline's reputation as a science. Although relatively unpopular, it is
now possible to do research on primates without tying in human evolution.
Frans de Waal, a Dutch primatologist and ethologist, is one of the most popular currently
active primate behavior scientists. He has published numerous books on the subject, which focus
mainly on the social lives of primates. He links the behaviors of chimpanzees and bonobos to
human behavioral traits. An issue I personally have with de Waal's bonobo field work in
particular is that it was conducted at the San Diego Zoo. Factors such as unnaturally high stress
levels are consequential to a captive environment, meaning the behavioral observations he made
are skewed. His research has contributed to the slogan “make love, not war” based on his
observations that bonobos use sex instead of fighting to settle high-tension situations. This is
true, but due to the fact his studies were conducted in captivity, the rates he recorded are not the
same as the natural ethology of bonobos. I would have no objection if this distinction wasn't
overlooked by the general media and had affected views the public now has of the species.
Through my brief history of primatology, I have pointed out one common factor in the
work of each of the aforementioned players: anthropomorphizing their research. De Waal's
approach is the same, and has even spoken out against its resistance, calling it “anthropodenial.”
He offers the analogy of a brick wall; people in anthropodenial attempt to build a brick wall
separating humans from their evolutionary ancestors. “They carry on the tradition of René
Descartes, who declared that while humans possessed souls, animals were mere automatons. This
produced a serious dilemma when Charles Darwin came along: If we descended from such
4. Hilyard 4
automatons, were we not automatons ourselves? If not, how did we get to be so different?” (de
Waal, “Are We in Anthropodenial”). According to this analogy, a brick is pulled from the wall
each time one of these questions is asked. He attributes our “anthropodenial” to parsimony, “that
we must make as few assumptions as possible when trying to construct a scientific explanation”
(de Waal, “Are We in Anthropodenial”). Personally, I agree with this idea, and liken it to the
legal concept of “innocent until proven guilty.” The reason behind a given behavior must be
tested, not immediately explained by our own reason for similar behavior. And this sort of testing
has been applied in certain circles of scientists, but isn't over yet.
When we anthropomorphize in field work, it invites a set of assumptions that may clutter
the data. In the subfields of archeology and paleontology, for example, it is a well-accepted
practice that every piece of data be collected with as little assumption as possible. This allows for
a wider range of possible conclusions during lab analysis. If we record that a particular behavior
is anything other than the behavior itself, it muddies the results. Research that uses other
primates in order to better understand ourselves isn't the only research that is being carried out.
Inferring meaning is admissible when dealing in that realm of study, but harms the data when
studying the ecology of a species on its own. As far as I'm aware, fields like ichthyology and
ornithology don't have this problem. Our evolutionary proximity shouldn't come into the picture
when studying species ecology for conservation and rehabilitation uses.
Language Studies of the Great Apes
When it comes to experiments dealing with apes' abilities to learn and understand human
language, there have been a few different approaches: sign language, physical tokens with
symbols, and an asymmetric form of communication that utilizes drawn symbols. Each has its
5. Hilyard 5
own theoretical and methodological advantages and setbacks. The degree to which the
communication is two-way is important, as well as the ability for the ape in question to retain the
taught information.
Signing
The most famous sign language experiment has to be Koko the gorilla, who has gotten an
incredible amount of media attention over the years. She is currently 41 years old, and is
somewhat of a pop culture phenomena. She is thought to be able to sign over 1,000 words, and
understand more than 2,000 words of spoken English. Project leader Dr. Francine “Penny”
Patterson has documented Koko inventing new words for objects on her own (The Gorilla
Foundation). Knowing sign language and understanding spoken language is all well and good,
but what she does, while impressive, is not full communication. She does not use sentences, but
rather strings together words that suggest her implied meaning. She does not know how to apply
grammar, and uses signing for mostly self-serving purposes; it is not necessarily what I would
call a conversation. Another objection is the way her handlers interact with her, especially in
training. In a psychological process known as operant conditioning, Koko is rewarded for
producing a sign. Some issues with proper word use have arisen with her training, for example
the use of the word “dirty.” To train the concept, the researchers associated the word with her
feces. Once learning the word, she referred to people and even events as “dirty” (Candland).
All of Koko's behaviors and abilities have been anthropomorphized to some extent. Her
paintings have been viewed by the public and art critics, and both have praised her abilities. She
has adopted pets, and is said to still mourn her first kitten. Her keepers see her as an individual
who is completely capable of emotional feeling and expression. I'm sure she innately has some
degree of emotional depth, but I'm skeptical of the way in which it is expressed. Of interest is the
6. Hilyard 6
fact that, after the first year of the project, the zoo Patterson was working with was uneasy with
the her work because they believed Koko was becoming “less of a gorilla than a human-tamed
animal” (Candland.) To me, the use of the word “tamed” implies there is little self-awareness of
her behavior, it is strictly a reward system. All behavior is taught by mimicry, but the individual
must eventually understand deeper levels of meaning implied in the communication, and I'm not
sure she's there yet.
Symbols
David Premack's primatology work dates back to 1954 when he joined the Yerkes
National Primate Research Center. The opening note in his paper “Animal Communication”
nicely summarizes his approach on the topic of human-primate communication: “This might
have been called 'animal language,' but purposely it was not. In fact, the difference between the
nature of language and communication in man and animals is the basis of an ongoing theoretical
discussion among researchers in behavioral and biological sciences.” His approach is more
scientific than Patterson's, and poses a series of research questions that attempt to answer what
level of communication other primates are capable of. Instead of sign language, he used
magnetic-backed plastic symbols, each standing for a word or concept.
First working with Cebus monkeys in 1959, he published a paper on reinforcement, what
is now known as Premack's Principle. He postulates that the more probable behavior will
reinforce less probable behaviors. For example, students will often execute a less favorable task
if they know a more favorable one will be next as a result. One experiment Premack conducted
on children used eating candy as the reinforcing activity, and playing pinball as the instrumental
activity. He found that the children who prefered candy over pinball would perform the second
activity for the joy of eating the candy afterward. As stated in his 1959 paper, “Toward Imperical
7. Hilyard 7
Behavior Laws. I. Positive Reinforcement,” his theory outlines six conditions:
1. Reinforcement is a relative property. Responses A, B, C have a descending rank order of probability. A will
therefore reinforce both B and C. C will reinforce neither. This suggests that reinforcement is an absolute
property. However, B corrects this view. B will reinforce C, but not A. B is both a reinforcer and not a
reinforcer. Reinforcement is therefore a relative property.
2. Reinforcement is a reversible property. When drinking is more probable than running, drinking reinforces
running. When the probabilities are reversed, running reinforces drinking.
3. Historically, consummatory responses, eating and drinking, have served exclusively as reinforcers, but
consummatory responses are, like any other response, subject to reinforcement.
4. Reinforcement and punishment, traditionally contrasted as opposites, are in fact equivalent except for sign.
If response A leads contingently to B, and B is more probable than A, A will increase in frequency
(reinforcement); conversely, if A leads contingently to B, and B is less probable than A, A will decrease in
frequency (punishment). The major contrast is not between reward and punishment; but between reward
and punishment as contrasted with freedom. Freedom is the condition in which stimuli are freely (not
contingently) available to an individual.
5. When motorized running is more probable than lever pressing but less probable than drinking, then running
reinforces lever pressing and punishes drinking. In other words, the same response can be both a reinforcer
and a punisher - at the same time and for the same individual.
6. The equivalence of reinforcement and punishment is further suggested in this interesting fact: rats are either
sensitive to both reinforcement and punishment, or insensitive to both; they are never sensitive to one but
insensitive to the other.
All six conditions are consistent with what we generally think of as the reward system. I think it's
important to include his theory here because it applies to the other two case studies, Koko and
Kanzi/Panbanisha. Premack's work in the field of primatology has been mostly with
chimpanzees, and while he has shown that they can mimic certain facial expressions and use
symbols to communicate, it is not full communication. His studies showed a lack of ability for
syntactical understanding, which is a key part of the English language.
Lexigrams
The names Kanzi and Panbanisha don't quite elicit the same response from the general
public as Koko, but they are also very well-known apes in this field. The project they are under,
the Great Ape Trust, is lead by Sue Savage-Rumbaugh, whose approach is very controversial.
She believes great apes, specifically bonobos, can exist in a world where they are partly both
ape-like and partly human-like. Her approach for communication uses boards of lexigrams, a
“language ”called Yerkish in a nod to Robert Yerkes which is comprised of colored pictographic
8. Hilyard 8
symbols that stand for words or concepts. The boards emit the spoken word when the lexigram is
pressed, as well as the trainers speaking the word for reinforcement of the symbol. Savage-
Rumbaugh says Kanzi picked up the use of symbols when he started repeatedly drawing a
symbol in sand on the floor. I believe the system the Great Ape Trust uses more fully resembles
communication, as the apes are able to communicate more deeply than Koko or historical cases.
Other primates simply do not have the vocal cord range that we do, and this system somewhat
addresses that by having the board speak the word on behalf of the individual.
In their 1985 paper entitled “The Capacity of Animals to Acquire Language: Do Species
Differences have Anything to Say to Us?” Savage-Rumbaugh et. al. begin by attempting to
tackle the public and academic notions of what human-primate communication is or should look
like.
Thus, it must be recognized that the real issues involved in ape-language go far deeper than words and
syntax. They involve the very nature of inter-individual relationships as we as human beings know and
experience them, for a most distinctive human characteristic is that we do “tell” each other things, whether
it be in words, gestures, or pictures drawn in the dirt. We do knowingly, and with intent “tell” each other
things that allow us to transmit indirect experiences from generation to generation, to produce myth from
fact, to build and maintain unique cultures, and to know other human minds in ways that we do not know
the minds of other species on this planet. It is no small thing, therefore, to assert that apes are “telling”
people things, or that they are “telling” each other things.
Unlike the objections I've had to the previous cases, they acknowledge the issue of syntax but go
past it, going deeper into what communication actually means. In the conclusion to their paper,
they fully agree that the symbols and sentences Kanzi uses are learned, but assert that the
acquisition was not through conditioning or “training any more than the words and the symbols
used in this paper are so conditioned.” His understanding of the symbols on his lexigram board
9. Hilyard 9
seems to be bolstered by spoken language. Savage-Rumbaugh claims he had difficulty finding
the symbol for “apple” but as soon as the word was spoken, he seemed to immediately
understand and touched the appropriate symbol.
Some critics of her work have said the researchers use subtle facial gestures, such as
hinting with the eyes, to aid the bonobos in understanding what is being said. To counter these
claims, she wore a welding mask and asked Kanzi to “get the ball that is outside and bring it to
me.” Kanzi immediately goes outside, passing by another ball on his way out, and brings her the
required ball. Tasks such as “take off Sue's shoe” and “put the keys in the refrigerator” were also
successfully completed, with the welding mask on the researcher. The extent to which Kanzi and
Panbanisha understand spoken English is still being tested, but what we know at the moment is
pretty impressive. However, this is still not full communication, two-way communication.
Continuing Issues Within the Field
Since this paper assesses the capacity for the great apes to learn human language, it would
seem these two viewpoints, “anthropodenial” and anthropomorphization, are contradictory when
argued in the same paper. I think both aspects have their place and it is vital that they remain
separate. In terms of public perception, the de Waal camp is certainly predominant. However, if
other taxonomic studies like ornithology and ichthyology are more or less free of these concepts
that alter scientific perceptions, why can't there be a section of research carved out for
primatology that is ideally un-anthropomorphic?
That is probably the largest problem with these kinds of behavioral experiments,
choosing a theoretical side. Being categorized under anthropology, there is an inherent
anthropomorphic viewpoint to primatology. The extent to which you mix that with the
10. Hilyard 10
methodologies of “hard science” will determine what kind of primate behavior research you do,
as well as the kind of criticism you receive from both academia and the public.
Conclusion
Due to basic biological differences, the great apes are not able to reproduce the sounds of
the human vocal range. However, it is Savage-Rumbaugh's mix-and-match approach that most
closely resembles “communication” to me. A thread that runs through all of the human-primate
communication studies, and most of the current primate research, is anthropomorphization. It is
sometimes very difficult to know what the appropriate situation is to allow ourselves to
anthropomorphize, but it depends on the kind of research being done. As a general rule, I believe
that if the research is centered around the ecology of a primate species, then the practice of
anthropomorphization should be avoided. If there is some connection to humans, an attempt to
understand ourselves better, then it is more admissible but care should be taken to maintain
scientific integrity.
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