In other cultures cousins would be considered part of the nuclear family. The general description of "nuclear" and "extended" families was created around the the early 1900s. In other parts of the world, the definition of "nuclear" family may be different and include aunts, uncles and cousins that wouldn't be defined as "nuclear" or "immediate" families in most Western cultures. Societies in Africa, Asia, Latin America and many other parts of the world include family other than parents and siblings as their "immediate" family. Problems with the definition of nuclear family