Shooting American Family, Kentucky, By Carl Kiilsgaard

According to the work of scholars Max Weber, Alan Macfarlane, Steven Ozment, Jack Goody and Peter Laslett, the huge transformation that led to modern marriage in Western democracies was "fueled by the religio-cultural value system provided by elements of Judaism, early Christianity, Roman Catholic canon law and the Protestant Reformation".
In contemporary Europe and North America, people in academic, political and civil sectors have called attention to single-father-headed households, and families headed by same-sex couples, although academics point out that these forms exist in other societies. Also the term blended family or stepfamily describes families with mixed parents: one or both parents remarried, bringing children of the former family into the new family. Also in sociology, particularly in the works of social psychologist Michael Lamb, traditional family refers to "a middleclass family with a bread-winning father and a stay-at-home mother, married to each other and raising their biological children," and nontraditional to exceptions from this rule. Most of the US households are now non-traditional under this definition.