Final answer:
Positive and negative reinforcement both aim to increase a behavior; the former by adding a pleasant stimulus and the latter by removing an unpleasant one.
Step-by-step explanation:
In operant conditioning, both positive reinforcement and negative reinforcement are designed to increase behaviors. Felicia receiving $100 for getting an "A" is an example of positive reinforcement, because a desirable stimulus (money) is added, thus increasing the likelihood of her getting future "A"s. Henry not having to do chores for getting an "A" represents negative reinforcement, as an undesirable stimulus (chores) is removed to increase a specific behavior (achieving "A"s).
What these two types of reinforcement share is that they both encourage a behavior to occur more frequently. In Felicia’s case, the monetary reward encourages her to strive for "A"s, and in Henry’s case, the removal of chores also motivates him to earn "A"s. The key aspect they have in common is that they are strategies employed to increase a behavior.
Both positive reinforcement and negative reinforcement are designed to increase a behavior. They either add a pleasant stimulus or remove an unpleasant one to make a particular behavior happen more often.