Saturation of light is to ____, as amplitude of light is to ____.

If you make yourself smile while reading your psychology textbook, research on the facial feedback hypothesis predicts that you will probably ____.

In a token economy, ____.

Which dream theme tends to be universal?

Emotions are best described as ____.

Many sedative medications such as Valium and phenobarbital exert their effects by acting on ____.

Which of the following is primarily an inhibitory neurotransmitter?

In both men and women, sexual desire is influenced by ____.

Recent research suggests that ____.

The tendency to desire and seek out positive outcomes and avoid negative ones would best be considered a(n) ____.