Define positive reinforcement.

Positive reinforcement is the process of introducing a favorable stimulus immediately following a desired behavior, which increases the likelihood that the behavior will be repeated in the future. This concept is fundamental in behavior analysis, as it relies on the principle that behaviors followed by rewarding consequences are more likely to be repeated.

In the context of positive reinforcement, the favorable stimulus can take many forms, such as praise, tokens, privileges, or any other rewards that are meaningful to the individual. The key aspect is that it is applied after the desired behavior is exhibited, strengthening the behavior through reinforcement.

Understanding this concept is crucial for effectively using reinforcement strategies in ABA therapy, as it allows practitioners to promote positive behaviors in their clients. This method contrasts sharply with negative reinforcement or punishment strategies, which either involve the removal of a positive stimulus or the introduction of a negative one, neither of which aims to increase a desired behavior directly.