In its early years, psychology focused on the study of ________, but from the 1920s into the 1960s, American psychologists emphasized the study of ________.

In its early years, psychology focused on the study of ________, but from the 1920s into the 1960s, American psychologists emphasized the study of ________.

In its early years, psychology focused on the study of ________, but from the 1920s into the 1960s, American psychologists emphasized the study of ________. 









A) environmental influences; hereditary influences
B) maladaptive behavior; adaptive behavior
C) unconscious motives; conscious thoughts and feelings
D) mental life; observable behavior











Answer: D