Which family structures are there?The adult family members having the greatest effects on the development of a child are the members with whom they live together. These members are in regular contact, they support financially and raise the children. The term family structure refers to the number of and relationships between the people living in a household. What kind of family structure changes have occurred in the US?More and more children are living with one parent or with unmarried parents. In 2014, 46% of children lived with parents in their first marriage, compared to 73% in 1960. This is accompanied by a growth in the number of children living with a single parent. The family structure has major implications for the income. Almost half of the children living with a single parent live below the poverty line, compared with 14% of the children with two married parents. In addition, single parents often have less time for their child. Also, the age at which women have their first child has increased. There are fewer teenage pregnancies. Getting children at a later age has clear advantages. Parents generally have more financial resources and are less like to divorce within ten years. They are also often more positive in their upbringing. More and more children live with their grandparents. This has negative effects, because there was a long gap since the grandparents raised children themselves. Families are also getting smaller, due to the fact that women more often show work ambitions and there is improved birth control. Family structures are also more and more fluid, partly because of divorce.The number of teenage mothers has decreased in the recent years. Getting a child in adolescence is associated with negative outcomes for both the mother and the child. It has consequences on the possibilities for the mother in terms of education, career and relationships with peers. They often have weak skills in terms of parenting. Children...