Gerald has been given plastic poker chips for desirable behavior in his institutional setting. He understands the chips have a certain point value and can be used later on for privileges. Gerald is responding to a(n)

Throughout history, most births were overseen by ______

physicians nurses midwives shaman

What does the eating cycle of bulimia have in common with addictive drugs? a. Both activate the brain's reinforcement areas. b. Starvation decreases their cravings

c. Both can be relieved with morphine. d. Exercise increases the intensity of effect.