What is the primary feature of fixed-ratio reinforcement?

The primary feature of fixed-ratio reinforcement is that behavior is reinforced after a specific, predetermined number of responses have been made. This means that once the individual completes a set number of actions, they receive a reward. For example, if a worker is paid after producing 10 units of a product, this exemplifies fixed-ratio reinforcement because the reward (payment) is contingent upon completing exactly 10 units.

This type of reinforcement schedule is effective in motivating individuals to maintain a high level of performance. It encourages a high rate of response, as the clearer the expectations are for earning the reward, the more focused individuals are on achieving that goal. The predictability of the reinforcement, where individuals know they will be rewarded after a certain number of responses, can create a steady output of behavior.

Other options describe different reinforcement strategies or imply a lack of impact on behavior, which does not align with the essence of fixed-ratio reinforcement, where clear targets are set for reinforcement.