Final answer:
The American Psychological Association (APA) has grown to represent a diverse array of psychological specialties, and while the exact proportion of members in clinical and health-related settings is not specified, the association includes 54 divisions indicative of this diversity.
Step-by-step explanation:
The American Psychological Association (APA) has evolved significantly since its inception in 1892, reflecting the diversity of the field of psychology. Traditionally, the APA consisted primarily of academic psychologists, but the organization has since grown to include a wide spectrum of specialties within psychology. Though the specific proportion of members working in clinical and health-related settings today is not provided in the reference material, the diversity of the APA is evident with 54 divisions representing various specialties such as Societies for the Psychology of Religion and Spirituality, Exercise and Sport Psychology, and Behavioral Neuroscience and Comparative Psychology. This expansion mirrors demographic shifts and the increasing access to higher education among historically underrepresented populations, leading to a membership that is more representative of the wider population.