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#1. A Behavior Analyst is reviewing a client’s performance data, which is represented by a cumulative record graph. The graph shows a pattern where there are periods of no responding immediately following reinforcement, followed by a steady, high rate of responding until the next reinforcement is delivered. This pattern repeats consistently, forming a step-like cumulative record with flat segments and then steep, straight segments. Which basic schedule of reinforcement does this graph most likely represent?
This question tests knowledge of how different basic schedules of reinforcement are represented on a cumulative record The description of periods of no responding immediately following reinforcement is known as a postreinforcement pause This pause followed by a steady high rate of responding indicated by a steep straight segment which then repeats in a steplike pattern on a cumulative record is the hallmark of a Fixed Ratio FR schedule In an FR schedule reinforcement is delivered after a fixed number of responses leading to a pause after reinforcement as the organism has just received the reinforcer and knows it needs to complete a set number of responses again before the next one While Fixed Interval FI schedules also produce postreinforcement pauses their response pattern typically exhibits a scallop shape where responding gradually increases towards the end of the interval rather than a steep straight line Variable Ratio VR schedules produce a high steady rate of responding with very little or no postreinforcement pause because the number of responses required for reinforcement is unpredictable Variable Interval VI schedules produce a moderate steady rate of responding without significant postreinforcement pauses Therefore the distinct pattern of postreinforcement pauses followed by rapid consistent responding points directly to a Fixed Ratio schedule
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