Which scenario is an example of positive reinforcement?

In the context of reinforcement in behavior analysis, positive reinforcement involves adding a favorable stimulus after a desired behavior is exhibited, which increases the likelihood of that behavior being repeated in the future. In the chosen scenario, a child being given an allowance for doing chores is a quintessential example of positive reinforcement.

Here, the allowance serves as a reward that is added to the child's environment following the completion of chores. This provides a tangible incentive for the child to engage in the behavior of completing chores again in the future, reinforcing that positive behavior. The association between receiving the allowance and the action of doing chores strengthens the likelihood that the child will repeat this behavior.

The other scenarios illustrate forms of negative reinforcement or punishment rather than positive reinforcement, which help to distinguish why the allowance is the most fitting example of positive reinforcement.