The chimp who thought he was a boy

Raised like a son by a New York City family as part of a language experiment, Nim Chimpsky was shipped away when funds ran out. A new biography tells Nim's story.

By Chris Colin

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March 31, 2008 | Sometimes we're animals.

How else to account for a man who approaches a female chimp nursing its wide-eyed newborn, takes aim amid howling protests from nearby apes and blasts the mother with a tranquilizer dart -- then snatches the sobbing infant and delivers it to an otherwise thoughtful, loving woman, who whisks the creature off to her New York brownstone?

It was science, this was the '70s, and the gauntlet had been thrown down by none other than Noam Chomsky. While nonhumans may communicate with one another, the MIT linguist said, they are fundamentally incapable of language. Columbia University professor Herbert Terrace set out to disprove the assertion with an ambitious and groundbreaking study. The experiment that followed involved a cleverly named chimpanzee and some less-than-clever human choices. The fascinating, ultimately heartbreaking account has finally been told in journalist Elizabeth Hess' primate biography, "Nim Chimpsky: The Chimp Who Would Be Human."

Fancy Upper West Side address, nice clothes, summer in the Hamptons, fawning media attention, parents mellow enough to pass him their joint now and then -- for a year and a half, Nim had a life many humans would envy. But that was the problem: He himself wasn't human, merely raised to think he was. He bonded intensely with his adoptive family, and indeed learned around 125 words in American Sign Language, but in the end his fate wasn't that of a true son. Funding for the project ran out, Nim proved more difficult to handle as he got older, and eventually he was unceremoniously sent away.

Terrace would make a dramatic concession to Chomsky on the language question, sending waves throughout the field. But the charismatic subject at the center of the study more or less vanished. Nim bounced through some of the assorted grim facilities that house chimps, all the while making it clear he longed for his human family. For a creature who would demand hugs after being disciplined, and bring tissues to his adoptive mother when she cried, relocating to a world of cages and strange, hairy beings was incomprehensible.

Ultimately Project Nim illuminated as much about humans as about chimps. There was never any exit strategy. The implications of humanizing a wild, and intelligent, creature seem to have eluded the people responsible. At the time New York magazine referred to the study as a "scientific revolution with religious consequences that occurs once every few hundred years." One hopes it's no more often than that.

Hess spoke to Salon from her home in upstate New York.

How did people respond when they'd find out you were writing a book about chimpanzees?

I got a lot of banana jokes. And people were surprised to see that these animals are so complicated, and so emotional, and that they form such deep and serious attachments to human beings. That's why I wanted to write this. It's a novel experience to read a biography of a wild animal.

I was surprised myself. When I discovered Nim's story, it was like I was struck by lightning. No one really knew that story. He'd had these moments of incredible celebrity that were well documented, but ultimately what happened to him was a bit of a mystery.

The fact that Nim had been raised in a human family [by Stephanie and W.E.R. LaFarge], and learned how to operate around people, made him a very interesting subject. His life also allowed me to write about a variety of landscapes where chimps end up. The book takes you behind the scenes of a major behavioral language science experiment, and inside a primate breeding colony, and briefly inside a biomedical research lab, and ultimately to a sanctuary. Which in the end is about as good as it gets for any captive-born animal.

Can you describe the happy period when Nim first got to the house in New York?

Nim was with the LaFarges for 18 months, and most of that was a pretty happy time. I think it was incredibly exciting to have this baby chimp around. He loved to be held, he drank from a bottle. By the time he was 2 months, he could cling to walls and get up and down the banister. There was a giant waterbed in the living room that Nim loved to bounce up and down upon.

He was very beguiling. They dressed him in OshKosh and little T-shirts, and taught him how to sit at the table and use utensils. I think he really enjoyed being part of the family.

After funding ran out and Terrace declared the project a failure, Nim was taken from his loving home in New York, and bounced around various grim research facilities before he wound up at Cleveland Amory's sanctuary, in Texas. Tell me about what it was like for Nim to be put back in a cage with other chimps after he'd only ever known humans.

It was terrifying. One graduate student described the response that all the [research] chimps had [upon being reintroduced to other chimps] as a nervous breakdown. Nim's brother [and the subject of another study] Ally was so terrified and upset that he suffered a kind of paralysis for a while. They often pull out all their hair; they refuse to eat; some get beaten up by other chimps because they don't know how to respond to them.

The former graduate students in New York believe that Nim had no idea he was a chimpanzee. One of them suggested to me that Nim might have thought he was going to grow up, lose all his facial and body hair and eventually look like the people who were around him. That would be a reasonable supposition. Throughout his life, Nim preferred to be with humans.

Toward the end of his life, he was paired with an ex-circus chimp named Sally Jones. That, I think, was the first deep relationship he had with his own species. They were inseparable. Sally was a lot older, a lot milder. Nim had a reputation for breaking out of his cage in Texas. When Sally came, he would break out of his cage, but then he'd remember her, and he'd go back and get her. He'd lead her out of the cage and they'd go on a little romp together. Cleveland Amory was always afraid that Nim was going to run off into the woods. But he had no desire to run away. Nim would go to the nearest house and bring Sally with him, and they would raid the refrigerator, go through the closets and try on any shoes that were lying around, and sometimes they'd get into bed and turn on the TV.

He was also dangerous. Chris Byrne, the manager at [Amory's] Black Beauty Ranch that Nim was closest to, learned that when Nim broke out, the best thing to do was to just be completely calm. He'd see Nim at the door and he'd say, "Nim, welcome," as if Nim had been invited over for cocktails. He'd let him sit down for a while. Then he'd slowly lead Sally back to the cage, and Nim would eventually follow.

Next page: He would just look at pictures of his New York City family, and himself, over and over again