Spruce scratches and scratches and scratches their own skin until it is raw and bleeding. After ensuring that the scratching is not related to an underlying medical condition, their caregiver sets a timer for 3 seconds and tell Spruce that they can have a Reese’s Piece (single piece of candy) if they do not scratch themselves during that time. (Spruce is not overweight and does not have diabetes.) When the timer goes off, Spruce is given a piece of candy and the timer is reset. After receiving five pieces of candy (i.e., five 3-s intervals without scratching), the timer is set for 10 second intervals. If Spruce scratches before the timer goes off, the behavior is blocked and the timer immediately reset. At the end of some scratch-free intervals, Spruce is given a choice among types of candy (which naturally extends the scratch-free time and reduces the risk of satiation on Reese’s Pieces). Slowly and systematically, the interval is lengthened until Spruce is engaging in longer and longer periods of time without scratching. Which type of differential reinforcement is being used? Explain how you know it is the type of DR you identified:
Spruce scratches and scratches and scratches their own skin until it is raw and bleeding. After ensuring that the scratching is not related to an underlying medical condition, their caregiver sets a timer for 3 seconds and tell Spruce that they can have a Reese’s Piece (single piece of candy) if they do not scratch themselves during that time. (Spruce is not overweight and does not have diabetes.) When the timer goes off, Spruce is given a piece of candy and the timer is reset. After receiving five pieces of candy (i.e., five 3-s intervals without scratching), the timer is set for 10 second intervals. If Spruce scratches before the timer goes off, the behavior is blocked and the timer immediately reset. At the end of some scratch-free intervals, Spruce is given a choice among types of candy (which naturally extends the scratch-free time and reduces the risk of satiation on Reese’s Pieces). Slowly and systematically, the interval is lengthened until Spruce is engaging in longer and longer periods of time without scratching.
Which type of differential reinforcement is being used?
Explain how you know it is the type of DR you identified:
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