The evolution of a concept: aggression and violence in psychiatric settings.

In a series of studies examining aggression and violence by persons with a mental illness, a coercive interactional style emerged as an important predictive variable in hospital settings. This interactive style addresses one issue noted in the literature, the relative effect of personal versus environmental variables, by describing how violent individuals interact with their environment in purposeful ways. The findings from three specific studies are summarized to describe how this interactive style was identified, quantified and documented as a predictor of aggression and violence. It is hoped that this synthesis of research findings will facilitate the application of research to practice settings.