This article reviews a program of research that takes a transactional
person-in-environment approach to the study of disease prevention and
health promotion. Four areas of research are described: smoking cessat
ion, AIDS prevention, compliance with magnetic resonance imaging (MRI)
, and prognosis after hip fracture. The findings demonstrate that this
approach can shape health care interventions that address the patient
's thoughts, feelings, and values, and can successfully influence pati
ents' health-related behaviors.