ABSTRACT
The index of inhibited or uninhibited behavior in Cohort 1 was based on the child’s reaction to an unfamiliar female examiner, unfamiliar toys, a woman displaying a trio of acts that were difficult to recall, a metal robot, and temporary separation from the mother. The signs of inhibition were long latencies to in teract with or retreat from the unfamiliar people or objects, clinging to the mother, and cessation of play or vocalization. The uninhibited children showed the opposite profile. The index of inhibited behavior for the children in Cohort 2 was based primarily on behavior with an unfamiliar peer of the same sex and age, especially long latencies to interact with the unfamiliar child, retreat from the child, and long periods of time sitting or standing proximal to the mother.
