Many families around the world live in multigenerational households, which are defined as spanning three or more generations. There are several cultures, particularly in developing countries, that consider multiple generations in the home as the norm, but it is also becoming more common in developed nations, as rising costs of real estate, health care and childcare make more families consider joining forces across generations. Each generation, however, introduces a new set of potential complications and conflicts, which must be addressed in order for a multigenerational household to function and thrive.