Within the home people come into very close contact, so not only could there be transmission of an infectious disease, but also of people's moods, fears, joys and anger. The personal interaction between family members is something the health visitor should observe carefully. Good mental and social health is shown by harmonious interaction people and also by individual's ability to perform his particular role in society or in the family. A mother should therefore enjoy being a mother and should be able to do this job well–similarly in her role as a wife she should love her husband and be able to be a good wife. A woman who is sterile for physical health reasons is then unable to be a mother or a perfect wife and is therefore at risk of developing emotional and social problems.
The family has many functions, the most important being childbearing, child-rearing, providing the satisfaction of the home, and in rural areas the production of food which is often done with the help of, to certain degrees, all the older children and adults.