-Parsons claimed that in pre- industrial Britain=extended and after industrialisation=nuclear. Young & Wilmott researched the area of Bethnal Green in London in the 1950s and found that the change from extended families to nuclear families was gradual, with many extended families still strong, especially among the lower working class. They suggested that the decline in extended families occurred in the 1960s when full employment meant that family members no longer had to rely on each other for financial support. 1/2