For a time during the 1930s and 1940s Clark Hull was the most influential figure in American psychology. Hull's research focused mostly on

A) mental illness.
B) the structure of the mind.
C) the influence of other people on our attitudes and behavior.
D) maze learning in rats.

Clark Hull

An influential psychologist known for his drive-reduction theory of learning and motivation, emphasizing the role of biological needs in behavior.

Mental Illness

A wide variety of psychological disorders that influence one's emotions, thought processes, and actions.

Maze Learning

A cognitive process and experimental method used to study spatial navigation and learning capabilities in animals and humans.