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  1. No Access

    Article

    Observation of Masturbation After Visual Sexual Stimuli From Conspecifics in a Captive Male Bearded Capuchin (Sapajus libidinosus)

    Masturbation is part of the natural behavioral repertoire of primates, with visual sexual stimuli known to trigger this behavior. Here, we report masturbation events triggered by visual sexual stimulus (VSS) i...

    Paula Coutinho, Adrian Barnett, Cynthia Cavalcanti… in Archives of Sexual Behavior (2023)

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    Article

    Learned helplessness deficits: Uncontrollable outcomes or perceived failure?

    An experiment is described showing that learned helplessness deficits are produced by prior exposure to uncontrollable outcomes rather than perceived failure. Although the controllability manipulation did prod...

    Dr. Anthony H. Winefield, Adrian Barnett, Marika Tiggemann in Motivation and Emotion (1985)

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    Article

    Uncontrollability versus perceived failure as determinants of subsequent performance deficits

    An experiment is reported that attempted to dissociate the effects of uncontrollability from those of failure in the standard learned helplessness induction procedure involving instrumental tasks. The task was...

    Marika Tiggemann, Adrian Barnett, Dr. Anthony H. Winefield in Motivation and Emotion (1983)