 Goodall was not the only primatologist to name chimps while in the field, biologist Professor George Schaller also named the subjects he studied.Sir Solly Zuckerman, an anatomist at the Zoological Society of London April 1962, criticised Goodall for using anecdotes,

“There are those who are here and who prefer anecdote – and what I must confess I regard as sometimes unbounded speculation, in scientific work it is far safer to base one’s major conclusions and generalisations on a concordant and large body of data than on a few contradictory and isolated observations, the explanation of which sometimes leaves a little to be desired.”

By observing the chimpanzee troop in their native habitat in the 1960's, Goodall came to the conclusion counter to the scientific community at this time that chimpanzees had distinct personalities and were capable of friendship and altruism.Some behaviours and emotions observed included nervousness, aggression, hugging, kissing, grudges, kicking, punching, subordination to a dominant character and friendship.