Yerkes concluded that the average mental age of White American adults was:

Helen Dunbar and Franz Alexander were instrumental in establishing the earliest organization to study psychological determinants on health. It is called:

a. Health Psychology c. Psychosomatic Medicine b. Society for Behavioral Medicine d. American Psychosomatic Association

The second prenatal stage is:

a. germinal. c. fetal. b. embryonic. d. zygotic.