Applied Behavior Analysis Technician (ABAT) Practice Test

What type of schedule delivers reinforcement for the first response after a specified amount of time has elapsed?

1. Fixed Ratio

2. Variable Ratio

3. Fixed Interval

4. Continuous Reinforcement

The correct answer is: Fixed Interval

The correct answer is based on the definition of a fixed interval schedule of reinforcement. In this type of schedule, reinforcement is provided after the first response that occurs following the passage of a set amount of time. This means that regardless of how many responses are made, the individual must wait for a specified duration before a response can lead to reinforcement. For example, if a reinforcer is given every 5 minutes as long as at least one response has been made after that time has elapsed, this would illustrate a fixed interval schedule. The critical aspect of this schedule is that the timing of the reinforcement is predictable and consistent, which can lead to patterns of responding wherein individuals may increase their behavior as the time for reinforcement approaches, demonstrating a scalloped response pattern. Other types of schedules such as fixed ratio and variable ratio focus on the number of responses required for reinforcement rather than the passage of time, and continuous reinforcement provides reinforcement for every response without any delays or specified time intervals.