Effects of Amount of Postshift Training on Resistance to Extinction

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The investigation sought to examine resistance to extinction (Rn) as a function of previous experience with downward shifts in reward magnitude. It was suggested that previous research conducted within the framework of the Spence-Amsel frustration hypothesis and the sequential hypothesis failed to administer sufficient postshift trials to adequately establish the relationships that may exist. Under one condition, four groups of rats received twenty extinction trials following forty postshift trials. Under another condition, four groups were extinguished following eighty postshift trials. An inverse magnitude of reward effect occurred in the preshift phases, however, which prevented an adequate analysis of either the ... continued below

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iv, 37 leaves: ill.

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Wheeler, Royce Lee May 1974.

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  • Wheeler, Royce Lee

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The investigation sought to examine resistance to extinction (Rn) as a function of previous experience with downward shifts in reward magnitude. It was suggested that previous research conducted within the framework of the Spence-Amsel frustration hypothesis and the sequential hypothesis failed to administer sufficient postshift trials to adequately establish the relationships that may exist. Under one condition, four groups of rats received twenty extinction trials following forty postshift trials. Under another condition, four groups were extinguished following eighty postshift trials. An inverse magnitude of reward effect occurred in the preshift phases, however, which prevented an adequate analysis of either the shift or the Rn data, This unexpected effect was discussed within the framework of Black's incentive-motivation interpretation of reinforcement.

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iv, 37 leaves: ill.

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  • May 1974

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  • June 24, 2015, 9:39 a.m.

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  • Sept. 14, 2016, 2:22 p.m.

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Wheeler, Royce Lee. Effects of Amount of Postshift Training on Resistance to Extinction, thesis, May 1974; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc663187/: accessed June 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .