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Results

#1. A Board Certified Behavior Analyst (BCBA) is designing a new reinforcement program for a client. The program involves two distinct schedules of reinforcement an FI 25 (Fixed Interval for 25 slides completed in a PowerPoint presentation) and an FI 2 hour (Fixed Interval for 2 hours passed). These schedules are presented one at a time, alternating randomly, and there is no discriminative stimulus (SD) present to indicate which specific reinforcement schedule is currently in effect. Based on this description, what type of compound schedule of reinforcement is being implemented?

Multiple schedule

Mixed schedule

Tandem schedule

Concurrent schedule

This scenario describes a Mixed schedule of reinforcement A Mixed schedule is a compound schedule of reinforcement where two or more basic schedules of reinforcement operate in an alternating unsignaled fashion and only one schedule is in effect at any given time The key defining features in this problem are that the schedules FI 25 and FI 2 hour are alternating randomly only one is available at a time and crucially there is no discriminative stimulus SD to signal which schedule is currently active If there were an SD it would be a Multiple schedule Tandem schedules involve two or more schedules in sequence with no SD but they do not alternate randomly rather one must be completed before the next begins Concurrent schedules allow the individual to choose between two or more schedules that are operating simultaneously which is not the case here

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