Final answer:
The correct answer is 'Variable Interval', where reinforcement is given after an unpredictable amount of time, encouraging a moderate, steady response rate.
Step-by-step explanation:
According to a variable interval reward schedule, desired behavior is reinforced after an unpredictable amount of time has passed. This type of schedule is characterized by its unpredictability in terms of when the reinforcement will be provided. It differs from a fixed interval schedule which reinforces behavior after a set amount of time.
For instance, Manuel, a fast-food restaurant manager, could be on a variable interval reinforcement schedule if he never knows when a quality control person might arrive to award a clean and efficient restaurant with a bonus. This unpredictability in reinforcement timing keeps his productivity steady as he aims to maintain high standards at all times.
In contrast, slot machines reward gamblers with money according to a variable ratio reinforcement schedule, where the reinforcement is provided after an unpredictable number of responses. This schedule is known for producing a high and steady rate of response and is also the most resistant to extinction.