Occam’s Razor and Animal Cognition and Emotion

I’m sometimes startled by the lengths to which some scientists will go in insisting that nonhuman animals cannot feel, think, plan ahead, mourn, etc. In a recent Wired Science essay, “Stone-throwing Chimp Thinks Ahead,” author Michael Balter cites psychologist Sara Shettleworth’s article denying that the chimp in question actually planned ahead when he gathered stones to throw at visitors. The actual language Balter uses is whether “some humanlike animal behaviors might have simpler explanations.”

Occam’s Razor, the principle of accepting the simpler theory or hypothesis over a more complex or convoluted one, is normally accepted as a worthwhile guiding approach to adopting explanations; yet when it comes to animals, scientists often go out of their way to refute the simplest explanation, which is that many other animals are able to think, feel, plan ahead, mourn, and so on.

Anthropomorphism can be dangerous and misleading, and readers of my blog know how much I appreciate the scientific method for determining what is true and what is not; yet it’s ironic that Occam’s Razor is so quickly abandoned when it comes to anything related to animal cognition and feeling.

Isn’t is simpler to assume that other mammals evolved to learn from experience, plan ahead (what else are squirrels doing when they store nuts for winter), and to feel? Descartes’ belief that a dog’s yelp was akin to a robotic program rather than an expression of feeling is preposterous to anyone who’s ever spent any time with a canine, yet such outdated opinions about animal emotions are still normative among many scientists. It seems both silly and unscientific to believe that humans are unique in our capacity to feel and think, as if we didn’t evolve, along with other mammals, to have these capacities for a purpose. Such assumptions seem more the purview of those who deny the reality of evolution than those who embrace science.

But things are changing. Jane Goodall, who was once excoriated for naming the chimpanzees she studied in Gombe, is now a widely respected ethologist. Other ethologists, like Marc Bekoff who wrote the wonderful book, The Emotional Lives of Animals, are published regularly in respected journals. And stories about chimps thinking ahead make sense to most of us, even as the citations of those who deny this ability seem odd, old-fashioned, and unscientific.

For a humane world,

Zoe Weil, President, Institute for Humane Education
Author of Most Good, Least Harm, Above All, Be Kind, and The Power and Promise of Humane Education
My TEDx talk: “The World Becomes What You Teach

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Exposing the Impact of Our Choices on Nonhuman Animals

For my blog post today, I’m sharing a recent post I wrote for Care2.com, an online community for people passionate about creating a better world. Here’s an excerpt from Exposing the Impact of Our Choices on Nonhuman Animals:

“In 1985, I was fascinated by what I’d read about Sarah, a chimpanzee who could use a symbolic language to communicate, so I contacted Dr. David Premack, the principal researcher working with Sarah and other chimps at the University of Pennsylvania primate research lab, to volunteer. I’ll never forget meeting Sarah.

… Sarah lived alone in her cage. The four other chimps at the lab were only three years old, and I was told that Sarah might harm them, so this social animal was confined permanently in solitude. She had long since refused to continue with her language training, so her life consisted largely of watching soap operas on a TV on the other side of her cage or sitting in her small outdoor enclosure.

… For years I felt haunted by Sarah. Was she to live out her days in isolation and misery? All I could do was tell her story and, as a humane educator, teach, so that we might make different societal choices in relationship to others, whether people or nonhuman animals. Fifteen years later, I learned that Sarah had found a final home at Chimp Haven, a chimpanzee sanctuary that houses chimps formerly used in medical research, entertainment and as pets. My eyes filled with tears of relief at this good news.”

Read the complete post.

For a humane world,

Zoe Weil, President, Institute for Humane Education
Author of Most Good, Least Harm, Above All, Be Kind, and The Power and Promise of Humane Education
My TEDx talk: “The World Becomes What You Teach

Image courtesy of Joao Maximo via Creative Commons.

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The Great Ape Project

I just finished the recently published Nim Chimpsky: The Chimp Who Would Be Human by Elizabeth Hess and then immediately picked up Roger Fouts’, Next of Kin, which is about Washoe and the other chimps to whom he has taught sign language over his long career as a psychologist. I recommend both books (although my preference isFouts’ Next of Kin). They describe the language studies conducted with chimpanzees during the 1970s and 80s, the astonishing reality of human-chimpanzee communication in our language, and the aftermath for the celebrity chimps.

These books reminded me of my brief volunteer work in David Premack’s primate facility at the University of Pennsylvania. Dr. Premack had written a book about his research chimp, Sarah, to whom he taught a symbolic language. After reading his book, The Mind of an Ape, in 1985, I called Dr. Premack to see if I could volunteer at his lab. He agreed. I was so eager to meet Sarah, but I felt heartbroken when I did. Although she had quite a spacious cage, she was alone, separated from both humans and other chimps. She was 12 when I met her, and I was told she was too big, strong, and dangerous to interact with people, except through the bars of her cage. Although chimpanzees are social animals, she had no chimp companions. The other chimpanzees at the facility were just a few years old, and while these young ones were caged together, I was told Sarah might harm them if allowed to be with them. And so, while Sarah could often see the other chimps when they were outdoors, she was isolated.

I was told to keep my distance from Sarah, warned that if I got too close to her cage she could grab my arm and pull it off, but one day, standing several feet away, I said to Sarah, “Turn around and I’ll scratch your back.” I twirled my index finger as I spoke, and sure enough, Sarah turned around, pressed her back against the bars of her cage, and sank down to sit on the floor. I walked up to her cage and scratched her back, not worried in the slightest that she would harm me.

I’ve recently learned that Sarah now lives in a primate sanctuary. This is a tremendous relief, because I feared for her future. I had volunteered with the best intentions, imagining that language studies with chimpanzees were not only benign, but wonderful. Reading Next of Kin and Nim Chimpsky reminded me that these studies were anything but. Although Sarah, despite her imprisonment, was treated with great kindness when I volunteered at Dr.Premack’s lab, the chimps in other facilities were often brutalized (as Dr. Fouts describes at length). But even if they were all treated well, chimpanzees live for half a century. Trendy language studies of the 1970sdidn’t carry into future decades very far. In fact, Dr. Premack stopped his research only two years after I volunteered at his facility. The chimpanzees, dangerous and expensive to house and feed for the duration of their lives, were often sold to biomedical research labs, used for HIV/AIDS, hepatitis, and military research, and other forms of invasive experiments. Many have wound up in tiny isolated cages, going mad, suffering unrelieved depression and anxiety, in addition to the misery of their testing protocols. Raised as human children, and experiencing themselves as human children, such chimps are, ultimately, no more than property, and many have been sold into ghastly, nightmarish lives of abuse.

There’s a way to stop this abuse of our closest living relatives. The Great Ape Project (GAP) seeks to secure rights for great apes. Their declaration is as follows:

We demand the extension of the community of equals to include all great apes: human beings, chimpanzees, bonobos, gorillas and orangutans. The community of equals is the moral community within which we accept certain basic moral principles or rights as governing our relations with each other and enforceable at law. Among these principles or rights are the following:

  1. The Right to Life – The lives of members of the community of equals are to be protected. Members of the community of equals may not be killed except in very strictly defined circumstances, for example, self-defense.
  2. The Protection of Individual Liberty – Members of the community of equals are not to be arbitrarily deprived of their liberty; if they should be imprisoned without due legal process, they have the right to immediate release. The detention of those who have not been convicted of any crime, or of those who are not criminally liable, should be allowed only where it can be shown to be for their own good, or necessary to protect the public from a member of the community who would clearly be a danger to others if at liberty. In such cases, members of the community of equals must have the right to appeal, either directly or, if they lack the relevant capacity, through an advocate, to a judicial tribunal.
  3. The Prohibition of Torture – The deliberate infliction of severe pain on a member of the community of equals, either wantonly or for an alleged benefit to others, is regarded as torture, and is wrong.

You may have heard that in 2008 the parliament in Spain passed a resolution granting certain human rights to great apes. That resolution was based on the work of the Great Ape Project.

If you would like to sign the GAP declaration, learn more, or get involved, I recommend visiting the The Great Ape Project, and reading the books mentioned above.

~ Zoe

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