12 Kasım 2024 Dergi makalesi Açık Erişim

Booth, Robert W.; Gönül, Selen; Sözügür, B. Deniz; Khalid, Khadija

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    <subfield code="a">&lt;p&gt;Individuals high in depressive symptom severity show probability bias: they believe negative&amp;nbsp;events are relatively probable, and positive events relatively improbable, compared to those&amp;nbsp;with less severe symptoms. However, this has only ever been demonstrated using self-report&amp;nbsp;measures, in which participants explicitly estimate events&amp;rsquo; probabilities: this leaves open the&amp;nbsp;risk that &amp;lsquo;probability bias&amp;rsquo; is merely an artefact of response bias. We tested the veracity of&amp;nbsp;probability bias using an indirect behavioural measure, based on a sentence-reading task.&amp;nbsp;Study 1 tested 112 Turkish students; Study 2 tested 117 international users of online groups&amp;nbsp;for people with depressive and anxiety disorders. As predicted, participants with higher&amp;nbsp;depressive symptom scores responded relatively quickly to sentences stating negative events&amp;nbsp;might occur, and relatively slowly to sentences stating positive events might occur, compared&amp;nbsp;to those with lower scores. This effect was only marginal in Study 1, but reached significance&amp;nbsp;in Study 2. However, contrary to predictions, this effect was not moderated by the probability&amp;nbsp;level stated in the sentence. This makes our findings difficult to interpret, and we must&amp;nbsp;present these studies as a failure to convincingly demonstrate depression-related probability&amp;nbsp;bias. We hope this stimulates more work on the nature and veracity of probability bias.&lt;/p&gt;</subfield>
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    <subfield code="a">A Behavioural Test of Depression-Related Probability Bias</subfield>
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    <subfield code="a">Gönül, Selen</subfield>
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    <subfield code="a">Booth, Robert W.</subfield>
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