Which of the following is an example of a consequence in behavior analysis?

In behavior analysis, a consequence refers to any event that follows a behavior and can influence the likelihood of that behavior being repeated in the future. Providing a sticker for completing homework is an example of a consequence because it serves as a reinforcement, encouraging the student to continue completing their homework. This positive reinforcement increases the probability that the behavior of completing homework will occur again.

In contrast, introducing a new subject to study or evaluating student progress weekly do not directly follow a specific behavior to affect its future occurrence in the same way reinforcement does. These activities may be part of an instructional strategy but are not consequences that directly modify behavior. Similarly, changing the classroom layout may impact behavior indirectly but is not a direct consequence that reinforces or punishes specific actions. Therefore, providing a sticker is a clear and direct example of a consequence in behavior analysis.