Object Permanence in Child and Chimpanzee

Animal Learning & Behavior 1980,8 (1), 3-9 Object permanence in child and chimpanzee SUSAN WOOD, KATHLEEN M. MORIARTY, BEATRICE T. GARDNER, and R. ALLEN GARDNER University ofNevada, Reno, Nevada 89557 In a repeated-measures design, two infant chimpanzees and three human infants were tested in like manner using the Uzgiris and Hunt (1975) stepwise assessment instrument for the development of object permanence in human infants. Comparisons between chimpanzee and human subjects showed similarities in the number of steps achieved, in the order and rate of achieving the steps, and in the detailed