The role of theory in HIV prevention

There is growing evidence that well designed, targeted, theory-based behavi our change interventions can be effective in reducing the spread of HIV. Al though each behaviour is unique, there are only a limited number of theoret ical variables that serve as the determinants of any given behaviour. Under standing these variables and their role in behavioural prediction can guide the development of effective behaviour change interventions. This paper wi ll describe and define these variables and show how they can be used in the development of behavioural interventions.