Jackie is a new mother who says, "I just can't stand to be away from my baby. I feel so close to him emotionally that I just love him." Jackie's comments reflect the core principle involved in:

The drug _______ is an agonist at CB1 receptors

a. alcohol b. marijuana c. LSD d. cocaine e. nicotine

Jamaal's mother tells him, "If you clean your room, you won't have to do the dishes." What type of contingency is she attempting to apply?

A) ?Positive reinforcement B) ?Negative reinforcement C) ?Positive punishment D) ?Negative punishment