A procedure in which a behavior is followed by an event/item/activity that results in the strengthening of the behavior over time. By definition, the procedure MUST have the anticipated strengthening effect on the behavior for the intervention be considered as positive reinforcement. Much like positive punishment in which the “punisher” or punitive stimulus can be anything, the same goes for positive reinforcement. Smiles, candies, high-fives, “Good-job!” and tokens can be reinforcers. Reprimands, time-outs, losing a token can also be reinforcers. Again, this is another very important concept so it is recommended that you discuss this topic with your BCBA.