A drug (like cocaine) that interferes with the action of reuptake transporters extends neurotransmitter availability to the receptors.

Trial and error ______

a. is never the best way to solve problems b. works best when there are only a limited number of choices c. works best when there are many ambiguous choices d. works best when there are many unambiguous choices

In Kohlberg's theory of moral development, postconventional reasoning is based upon

a. a good-boy/good-girl orientation. b. an obedience and punishment orientation. c. social order. d. one's personal moral standards.