work on primate cognition with Bornean orangutans. In 1993, Russon published an article with co-author Birute M Galdikas, titled Imitation in free-ranging rehabilitate orangutans (Pongo pygmaeus). In 1996, Russon edited a book titled Reaching into thought: The minds of the great apes. In this book, field and laboratory researchers show that the Great Apes are capable of thinking at symbolic levels, traditionally considered uniquely human. In 1998, Russon published an article with coauthor Richard W. Byrne titled Learning by Imitation: A hierarchical approach. In 1999, Russon published a nonfiction book titled Orangutans: Wizards of the Rainforest. The book included a brief history on the Orangutans, as well as current issues related to the rehabilitation of these primates. In the book, Russon detailed her experiences working with and rehabilitating ex-captive orangutans. Russon contributed to the 2002 documentary The Disenchanted Forest. References External links The Orangutan Sanctuary at York University Borneo Orangutan Society of Canada Humans Intrude on an Indonesian Park, New York Times, June 2009 Living people Canadian psychologists Canadian women psychologists Women primatologists Primatologists York University faculty Year of birth missing (living people)