What type of reinforcement occurs after an uncertain number of behaviors?

The correct answer is indeed variable ratio reinforcement. This type of reinforcement schedule provides rewards after an unpredictable number of behaviors have been performed. For example, in a variable ratio schedule, a person receives reinforcement, such as a reward or praise, after a random number of correct responses or behaviors. This unpredictability can lead to high levels of engagement and persistence, as individuals continue the behavior in anticipation of receiving rewards.

In contrast, fixed interval reinforcement occurs when a reward is given after a specific period of time has passed, regardless of the number of behaviors performed. Fixed ratio reinforcement involves providing a reward after a predetermined number of behaviors, while variable interval scheduling delivers rewards after varying time intervals, which can lead to moderate rates of responding but typically less consistent engagement compared to variable ratio reinforcement.

By understanding variable ratio reinforcement, one can see how this schedule tends to encourage sustained effort and resilience, as individuals are motivated by the possibility of receiving rewards after an uncertain number of actions. This concept is often applied in various settings, including sales and education, where perseverance is essential.