Which of the following is a feature of a Variable Ratio schedule?

A Variable Ratio schedule is characterized by the reinforcement of behavior after an unpredictable number of responses. This unpredictability creates a high rate of responding, as the individual does not know when the next reinforcement will occur, which can encourage them to engage in the behavior more frequently in anticipation of reinforcement.

For instance, in a scenario like gambling, players may keep playing despite not knowing when they will hit a jackpot because reinforcement (winning) comes after an uncertain number of bets. This leads to persistent behavior as the schedule promotes a steady rate of responses.

In contrast, other schedules—such as fixed ratio, fixed interval, or variable interval—are defined by their predictability or the set intervals or ratios required for reinforcement, which would not support the same high and sometimes erratic rates of behavior as seen with a Variable Ratio approach.