Which of the following is NOT a type of reinforcement?

Conditioned response is a term used in classical conditioning that refers to a learned response to a previously neutral stimulus. This term does not describe a type of reinforcement but rather a reaction that occurs as a result of the conditioning process. In classical conditioning, an unconditioned stimulus creates an unconditioned response, and through repeated pairings with a neutral stimulus, the neutral stimulus becomes conditioned to elicit a response.

In contrast, reinforcement is a concept from operant conditioning that specifically refers to consequences that increase the likelihood of a behavior being repeated. Both positive reinforcement, which involves presenting a pleasant stimulus after a desired behavior, and negative reinforcement, which entails the removal of an unpleasant stimulus following a desired behavior, serve to strengthen behaviors. Punishment, while a consequence as well, is intended to decrease a behavior rather than reinforce it. Therefore, conditioned response is distinct from the concepts of reinforcement and punishment, making it the correct answer as the one that does not belong in the context of reinforcement types.