Which statement correctly distinguishes positive reinforcement from punishment?

Which statement correctly distinguishes positive reinforcement from punishment?

• A. Positive reinforcement removes rewards to reduce behavior.
• B. Positive reinforcement adds a reward for desired behavior; punishment applies an aversive consequence.
• C. Punishment strengthens desired behavior.
• D. Positive reinforcement relies on fear to change behavior.

Answer: (B)

The key idea here is how consequences after a behavior shape future ones. Positive reinforcement strengthens a behavior by adding something desirable right after the behavior, which makes it more likely to occur again. Punishment, in contrast, introduces something aversive after the behavior to reduce its occurrence. So a statement that describes positive reinforcement as adding a reward for a desired behavior and punishment as applying an aversive consequence captures the essential difference between the two. The other descriptions mix up these effects: removing rewards describes negative punishment, not reinforcement; saying punishment strengthens the undesired behavior is incorrect; and claiming positive reinforcement relies on fear contradicts the reward-based approach.

The key idea here is how consequences after a behavior shape future ones. Positive reinforcement strengthens a behavior by adding something desirable right after the behavior, which makes it more likely to occur again. Punishment, in contrast, introduces something aversive after the behavior to reduce its occurrence. So a statement that describes positive reinforcement as adding a reward for a desired behavior and punishment as applying an aversive consequence captures the essential difference between the two. The other descriptions mix up these effects: removing rewards describes negative punishment, not reinforcement; saying punishment strengthens the undesired behavior is incorrect; and claiming positive reinforcement relies on fear contradicts the reward-based approach.