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Chunk #19 — Method — Statistical analyses

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Stress-related anhedonia is associated with ventral striatum reactivity to reward and transdiagnostic psychiatric symptomatology.
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predictor variables as covariates (e.g. CTQ × sex, VS × sex, etc.). Consistent with our previous report (Nikolova et al. 2012) the moderation models included self-reported depression symptoms as a covariate to ensure that the effect of the interaction between ELS and VS reactivity was specific to anhedonic symptoms. Additionally, a dichotomous age variable (under 21 and over 21 years) was added as a covariate in the problematic alcohol use moderated mediated model to account for legal drinking age.