- One who, or that which, forces or drives. - The solid piston of a force pump; the instrument by which
water is forced in a pump. - A small hand pump for sinking pits, draining cellars, etc.
Negative rein forcer A negative rein forcer refers to an unpleasant stimulus whose removal leads to an increase in the probability that a preceding response will be
Reinforcers Consequences immediately following a behavior that increase the probability that the behavior will be repeated are called reinforcers.