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At the end of nine months the Kelloggs demonstrated that environment, particularly psychological environment, is necessary for the development of an individual's inherent abilities. Gua, treated as a human child, behaved like a human child except when the structure of her body and brain prevented her. This being shown, the experiment was discontinued. Donald went with his parents to Indiana University at Bloomington, and Gua after "a gradual habituating process" was returned to Professor Yerkes to learn the prison life of other U. S. chimpanzees.
*THE APE AND THE CHILD—Whittlesey House ($3).