_______________, a hormone secreted by the pineal gland, helps to keep the biological clock in phase with the light-dark cycle.

What group of stimulants was first used by soldiers in World War II?

a. opiates c. amphetamines b. barbiturates d. crack

What is the proper sequence for a teacher using the technique of shaping?

a) Remain consistently generous with reinforcement throughout training. b) Remain consistently demanding with reinforcement throughout training. c) Begin by being generous with reinforcement and gradually demand more precise behavior. d) Begin by being demanding with reinforcement and gradually allow more behaviors for reward.

It is typical for multiple personalities to contrast sharply with each other

a. True b. False

Brody is entertaining himself and his mother with his repetitious "dadadada, babababa" as if he just likes the sound of his own voice. What is Brody doing?

A) Babbling B) Cooing C) Muttering D) Recasting