with someone's touch, like a parent's embrace. This is essential to a child's development.

A well-known study by psychologist Harry Harlow investigated the role of contact comfort using infant rhesus monkeys. The monkeys were separated from their biological mothers and provided with two types of surrogate mothers--one made of wire and another covered in soft cloth. Both surrogates provided nourishment through a feeding nozzle. Despite both surrogates meeting the monkeys' nutritional needs, the monkeys