acculturation, culture changes resulting from contact among various societies over time. Contact may have distinct results, such as the borrowing of certain traits by one culture from another, or the relative fusion of separate cultures. Early studies of acculturation reacted against the predominant trend of trying to reconstruct cultures of presumably isolated societies. Such work was faulted for implying that various cultural groups enjoyed an unchanging, precontact period. In this view, the anthropologist's job seemed quite simple, since each culture could be perceived as a unitary whole. Interactions with other peoples have, in fact, always been a significant feature of social life. Early studies of contact called attention to resulting social and individual psychological disturbances. Studies today often call attention to the development of one complex world system, in which some societies dominate others economically, politically, and socially. Many cultural theorists also observe the ways in which cultural groups resist domination, often working against acculturation in the process. Syncretism occurs when a subordinate group molds elements of a dominant culture to fit its own traditions. Acculturation differs from assimilation, in which different ethnic groups combine to form a new culture.