Cardiovascular disease continues to be the number ioral medicine" was developed and shaped into the one source of morbidity and mortality in our coun­ following definition: try. Despite a 35% reduction since 1964, these Behavioral medicine is the interdisciplinary field con­ diseases, particularly coronary heart disease cerned with the development and integration of behav­ (CHD), claim nearly 1,000,000 lives each year in ioral and biomedical science knowledge and techniques the United States (Havlik & Feinleib, 1979). relevant to the understanding of health and illness and The Framingham study, among others, has iden­ the application of this knowledge and these techniques to prevention, diagnosis, treatment and rehabilitation. tified three major risk factors implicated in the de­ (Schwartz & Weiss, 1978) velopment of CHD: smoking, elevated serum cho­ lesterol, and high blood pressure (Castelli et at., This concept of "biobehavioral" collaboration 1986). Given that these factors account for less challenged scientists and clinicians of many disci­ than 50% of the variance associated with CHD plines to consider how they might more effectively (Jenkins, 1976), it has become obvious that addi­ develop diagnostic, treatment, and prevention tional risk factors must be identified if further pro­ strategies by merging their perspectives to address gress is to be made in disease prevention and simultaneously, among others, behavioral, psy­ control.