​Before the development of health psychology, how was psychology involved in health?

A. Psychology's involvement in health traces back to the early years of the 20th century.
1. Psychologists were involved in medical education.
2. Despite long involvement, psychologists played a secondary role in medicine, restricted to mental health treatment and consultation.
B. The development of psychosomatic medicine promoted the role of mental factors in physical health.
1. The psychodynamic view holds that personality is a factor in the development of disease.
2. The psychosomatic view began to lose popularity, replaced by behavioral medicine and health psychology.