needs, studied the psychoanalytical theory. Oral gratification causes drive reduction, which is pleasant for the infant. However, his idea that attachment is due to feeding has never been supported.
             The learning theory also says that attachments occur, as parents are associated with food and comfort. But Harlow and Harlow (1969) tested this theory using rhesus monkeys. The monkeys were raised from birth with two surrogate 'mothers'. A wire one and a terry towelling one, the wire one dispensed milk to fifty percent and the terry towelling one to the other fifty percent. But, regardless of which one fed them, all monkeys became attached
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