Mice that were injected with a drug that mimics ___, a compound that normally builds up during wakefulness, showed antidepressant benefits without sleepiness:

Rate-of-living theories are focused on which of the following?

a. genetics b. energy c. stress d. oxidation

The person MOST closely associated with the law of effect is

a. Watson b. Skinner c. Pavlov d. Thorndike e. Bandura