In some studies, those infants must have social contact with caregivers as well as physical care from them in order to develop normally. This in institutional children who received adequate physical care like food, cloth, clean bedding, adequate toilet facilities and a lot more.  However, did not caregivers who handled and cuddled or talked to them, the children not only lagged behind others of their age in intellectual development but also suffered impaired physical health, apparently because of their lack of social contact. Such studies indicate that we must examine more closely the role of nurture, or socialization, in human development, as well as the role or nature, or biological processes.

The existence of prehistoric religion may be assumed. There is evidence of the universal of religion on historic times. As early as the 5th century B.C, Herodotus made objective comparisons between the religions of the fifty or so societies he traveled to from his home in Greece. He noticed many similarities among their Gods and pointed out evident to diffusion of religion worship.

The family may be viewed as a subsystem with interacting personalities. The members interact with one another in their reciprocal role, supported by a set of norms attitudes, and values drown mostly from the larger society.