Information about models of services delivery is impoerant to human services professionals because

1. 1940's--phil. of HS began to take shape: focus on health and wellness instead of disease. Idea of community based services. (which even more prom as result of deinstitutionalization.) 

2. 1950's - 1990s --expansion of comm mental health movement. Jimmy Carter recog th many americans lacked adeq access to mental health, recog need for sep federal exec branches: Sep education from Health and Human Services. Use of term signif. b/c clearly marks pt at wh HS b/c assoc w a wide range of services, not just mental health.