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  • Title: The effects of variable-time versus contingent reinforcement delivery on problem behavior maintained by escape.
    Author: Lomas Mevers JE, Fisher WW, Kelley ME, Fredrick LD.
    Journal: J Appl Behav Anal; 2014; 47(2):277-92. PubMed ID: 24764205.
    Abstract:
    Results of previous research indicate that the delivery of positive reinforcement (e.g., food) for an appropriate, alternative target response (e.g., compliance) or delivery of food on a time-based schedule can decrease problem behavior reinforced by escape, even when problem behavior continues to produce negative reinforcement (e.g., Lalli et al., ; Lomas, Fisher, & Kelley, ). In this study, we compared the levels of both compliance and problem behavior when food and praise were delivered either contingent on compliance or on a time-based schedule. Results for 3 of the 4 participants showed that contingent delivery of preferred edible items and praise was more effective in both reducing problem behavior and increasing compliance compared to variable-time delivery of these same items. These findings are discussed in the context of motivating operations and competition between positive and negative reinforcement.
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