In the 1980s, family portraits tended to be hierarchical and formal. Parents in the back, kids in the front, obviously posed. All faces were highly visible, there was little distance between the photographer and his subject. The emphasis was on the character of the subjects.
Current family portraits are egalitarian and informal. They’re taken outside with all the members in a row. The emphasis is less on the people and more on the place they have chosen. Faces are relatively unimportant.