Which of these is NOT one of the six schedules of reinforcement?

The correct answer is that "Random Ratio" is not one of the six schedules of reinforcement. The six recognized schedules of reinforcement include Fixed Ratio, Variable Ratio, Fixed Interval, and Variable Interval, among others.

Fixed Ratio involves providing reinforcement after a set number of responses, creating a clear pattern that the learner can recognize and predict. Variable Ratio, on the other hand, reinforces responses after an unpredictable number of responses have been made, which can lead to high rates of response due to the uncertainty of when the next reinforcement will occur. Fixed Interval schedules provide reinforcement after a fixed amount of time has passed, while Variable Interval schedules reinforce responses after varying amounts of time, making it difficult to predict when the next reinforcement will happen.

Since "Random Ratio" is not a standard term used in the study of reinforcement schedules, it does not fit into the established framework like the other options, further solidifying its status as the answer to the question.