Effects of Reinforcer Magnitude on a Fixed Time Food Delivery Treatment of Pica

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The purpose of the current study was to examine the effects of using fixed time schedules with different magnitudes of stimulus delivery as treatment for pica. A functional assessment was conducted, which indicated that pica occurred across experimental conditions and was most frequent in the absence of social stimulation or contingencies. A competing stimulus assessment was then conducted to identify stimuli that could potentially compete with pica during NCR. Subsequently, an evaluation of the effects of reinforcer magnitude on NCR as a treatment of pica was conducted. Treatment results indicated that quantity of reinforcer increased the effectiveness of leaner schedules ... continued below

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v, 40 p. : ill.

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Lyon, Nathan Scott August 2010.

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  • Lyon, Nathan Scott

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The purpose of the current study was to examine the effects of using fixed time schedules with different magnitudes of stimulus delivery as treatment for pica. A functional assessment was conducted, which indicated that pica occurred across experimental conditions and was most frequent in the absence of social stimulation or contingencies. A competing stimulus assessment was then conducted to identify stimuli that could potentially compete with pica during NCR. Subsequently, an evaluation of the effects of reinforcer magnitude on NCR as a treatment of pica was conducted. Treatment results indicated that quantity of reinforcer increased the effectiveness of leaner schedules of reinforcer delivery; however, it was not possible to fade the temporal schedule to one that would have been useful in practice. In addition, limitations and future research are outlined.

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v, 40 p. : ill.

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  • August 2010

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  • Jan. 6, 2011, 6:55 a.m.

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  • March 17, 2017, 11:08 a.m.

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Lyon, Nathan Scott. Effects of Reinforcer Magnitude on a Fixed Time Food Delivery Treatment of Pica, thesis, August 2010; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc30484/: accessed September 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .