_____ is credited with developing the learned helplessness theory of depression.

Visible light with a long wavelength and a low amplitude would be perceived as ______________

A) reddish and dim B) bluish and dim C) reddish and bright D) bluish and bright

Language is a very complex form of communication that separates humans from other animal groups. For this reason, _____ theorists believe that language must offer a survival advantage

A) psychoanalytic B) cognitive C) evolutionary D) behaviorist