Households made of one or two persons represented only one-quarter of households in the 1920s but accounted for two-thirds in the 1990s. The extended family of the beginning of the twentieth century, with three or more generations living together, has been replaced by the nuclear family. Both parents share family responsibility. Since the 1980s, other family models have become more common, such as single-parent families and blended families in which couples form a new family with the children from their former marriages.
Read more: http://www.everyculture.com/Sa-Th/Switzerland.html#ixzz3p2IVh4cG