Theorists using a perspective emphasize that families are important for society because they are the primary source for the raising and socialization of children.

functionalist

Explanation:

The family is an agreement, it shares the values of wright and wrong, it also acts as a body where different organs play a different role.

The functions of the family, more than being  a group of people living together  are: to maintain the internal stability of individuals and survive

Functionalists like Parsons will argue that crucial functions for its members, fulfilling sex drives like child-raising, feeding and giving shelter to its members.

Families keep society running into a direction.

The building block of society will be always the family, since it is the better model for fullfilng these needs.

There are main criticism to this view from feminist or marxist, but still the model explained here continues to be the predominant one.

as university of miami psychologists debra lieberman and adam smith pointed out in a recent article in the journal current directions in psychological science, humans have social and psychological mechanisms to deter incest. with very few exceptions, marriages between brothers and sisters and between parents and their children are verboten in every human culture. the primary psychological anti-incest mechanism is the yuck response. even the idea of sex with their mom or dad, bro or sis is upsetting to most people. the psychologist jonathan haidt has found that nearly everyone is repelled by the prospect of brother-sister sex, even in hypothetical situations in which there is no chance of pregnancy).

the biological cost of incest

this raises an interesting question: just what’s so bad about incest? sure, having sex with your dad or your sister seems gross — but why? some anthropologists have argued that incest taboos are learned social conventions. this explanation, however, doesn’t make sense to me as it does not explain the widespread existence of anti-incest mechanisms in creatures ranging from cockroaches to chimpanzees. second, the incest taboo is about as close to a universal law as human moral rules get.

why should mechanisms to avoid incest be so widespread both in nature and across human societies? the answer is simple. the problem with having sex close with relatives is that there is an astonishingly high chance that your offspring will be born with a serious birth defect.

answer; 5% is your answer; ///good luck