AP PSYCHOLOGY

Detailed explanation-1: -In both conditions, Harlow found that the infant monkeys spent significantly more time with the terry cloth mother than they did with the wire mother. When only the wire mother had food, the babies came to the wire mother to feed and immediately returned to cling to the cloth surrogate.

Detailed explanation-2: -Fear, Security, and Attachment Later research demonstrated that young monkeys would also turn to their cloth surrogate mother for comfort and security. Such work revealed that affectionate bonds were critical for development.

Detailed explanation-3: -Harlow and his colleagues repeated these experiments, subjecting infant monkeys to varied periods of motherlessness. They concluded that the impact of early maternal deprivation could be reversed in monkeys only if it had lasted less than 90 days, and estimated that the equivalent for humans was six months.

Detailed explanation-4: -If a frightening object was placed in the cage the infant took refuge with the cloth mother (its safe base). This surrogate was more effective in decreasing the youngsters fear. The infant would explore more when the cloth mother was present.

Detailed explanation-5: -Harlow (1958) modified his experiment and separated the infants into two groups: the terrycloth mother which provided no food, or the wire mother which did. All the monkeys drank equal amounts and grew physically at the same rate.