Which type of reinforcement involves adding a desirable stimulus?

• A. Negative reinforcement
• B. Positive reinforcement
• C. Positive punishment
• D. Negative punishment

Answer: (B)

Positive reinforcement involves adding a desirable stimulus following a behavior to increase the likelihood that the behavior will occur again in the future. This type of reinforcement is effective because it directly encourages individuals to repeat the desired behavior by providing a rewarding consequence. For example, if a student receives praise or a small reward for completing homework, this addition of a favorable stimulus (praise or the reward) increases the chances they will complete their homework again.

Understanding why positive reinforcement is effective is crucial in behavior analysis, as it helps practitioners design interventions that promote desired behaviors in individuals with special needs. This contrasts with other types of reinforcement and punishment where the focus is either on the removal of an undesirable stimulus or introducing consequences that may lead to a decrease in the likelihood of a behavior.