Henry and Artie like to play together because they share a lot of the same qualities: they are shy, nonaggressive, and interested in their schoolwork. Henry and Artie's friendship is explained by the principle called ______________

Your tutor has "one last word" for you before she ends today's session. She tells you to study material in the middle of your study session a little harder. What concept from memory research is the basis of her advice?

a. serial position effect b. state-dependent learning c. transfer test d. imagery

A researcher who found it most useful to think of drug withdrawal as enhancing the rewarding value of a drug would likely be most in favor of which drug addiction model?

a. Opponent-process theory of drug addiction b. Drive theory of drug addiction c. Incentive-salience theory of drug addiction. d. Disease model of drug addiction.