Life change and illness studies: past history and future directions.

A selected review of life changes and illness studies is presented which illustrates both the diversity of samples that have been tests in these studies and the generally positive results which have been obtained. Although early (retrospective) work in this field led to simplistic explanations, later (prospective) studies have begun to document the several intervening variables which occur between subjects' recent life change experiences and their subsequent symptomatology and disease. A life change and illness model is presented to illustrate key intervening variables. The authors believe that future research in the field of life change and illness should concentrate on further delineations of these intervening variables--an effort necessitating active collaboration between social and medical scientists.