Traditionally Americans have placed value on the nuclear family because this type of family is characterized by independence and geographic mobility. A/ TRUE B/ FALSE A/ TRUE B/ FALSE Solution True. The term nuclear family refers to the family group consisting of parents and children, as opposed to the extended family which includes all those with kinship ties. Prior to industrialization, nuclear family was not financially viable but post it with per capita income on the rise enabled it possible. The rate of geographical mobility in USA as compared to UK,Australia & Japan is the highest (reference- The geographical mobility of Americans: an international comparison by Larry H. Long, Celia G. Boertlein, United States). This we can consider along with level of indepence which nuclear family provides as among the most important reasons for high concentration of nuclear families in US..