To find out whether provision of food or contact comfort is more important in the formation of infant-mother attachment.
Eight newborn rhesus monkeys, separated from their mother immediately after birth.
Four monkeys isolated in cages where a cloth mother surrogate gave food and a wire surrogate did not.
Four monkeys isolated in cages where a wire mother surrogate gave food and a cloth surrogate did not.
Provision of food by either cloth or wire mother.
Amount on contact time spent with each mother.
All monkeys, in group 1 and 2 spent far more time with the cloth surrogate over the wire surrogate, regardless of which provided food.
Contact comfort is more important than feeding in the formation of infant-mother attachment in rhesus monkeys.
Contact comfort is likely to be a crucial factor in human infant-caregiver attachment.