Vassilopoulos et al BC 2015 FINAL.doc

001 crucially positive beliefs about ap explained a

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001. Crucially, positive beliefs about AP explained a further significant 11.1% additional variance in anticipatory processing when entered in the second step. At the second step, the overall model was significant, F (3, 297) = 45.23, p < .001. Moreover, positive beliefs about worry were no longer significant in the model, suggesting that positive beliefs about anticipatory processing had incremental validity. Do positive beliefs about anticipatory processing of a social-evaluative event explain unique variance in social interaction anxiety? We conducted a hierarchical regression analysis to determine whether the PB- APQ was uniquely associated with the SIAS when variance explained by depressive symptoms, tendency to engage in anticipatory processing, and general trait rumination was removed. In the analysis, BDI-II scores were entered in the first step, APQ and PBRS scores were entered in the second step, and PB-APQ scores entered in the third step with the SIAS as the criterion. This allowed us to test whether the PB-APQ uniquely predicted social anxiety symptoms over and above depressive symptoms, general positive beliefs about rumination and the tendency to engage in anticipatory ruminations before a social event. As can be seen in Table 4, the addition of depression scores into the model explained 22.0% of the variance in social interaction anxiety, ∆ F (1, 299) = 84.47, p < .001. Adding APQ and PBRS-SA scores to the model explained a further 4.4% of variance, ∆ F (2, 297) = 8.93, p < .001. Importantly, adding the PB-APQ contributed a 9
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Anticipatory processing and metacognition further significant 1.1% variance to the prediction of SIAS beyond depressive symptoms, anticipatory processing, and rumination, ∆ F (1, 296) = 4.62, p = .03. The full model (gender, depression, anticipatory processing, and rumination, and positive beliefs about anticipatory processing) accounted for 27.5% of the variability in social interaction anxiety scores, F (4, 296) = 28.19, p < .001. To examine the discriminant validity of the positive beliefs about anticipatory processing scale, we conducted a similar regression analysis with depressive symptoms as the outcome. Anxious symptoms were entered in the first step, positive beliefs about worry and rumination were entered in the second step, and positive beliefs about anticipatory processing were entered in the third step. After the first step, positive beliefs about worry and rumination explained an additional significant 3% of variance in social interaction anxiety, ∆ F (2, 297) = 5.88, p = .003, although positive beliefs about rumination was a significant predictor, β = .17, p = .002, and positive beliefs about worry was not, β = .01, p = .87. When entered in the third step, positive beliefs about anticipatory processing did not explain significant additional variance, F (1, 296) = 1.14, p = .29. Therefore, whereas positive beliefs about anticipatory processing predicted unique variance in social interaction anxiety, these beliefs failed to predict unique variance in depressive symptoms.
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  • Fall '19
  • Social anxiety disorder, Alprazolam

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