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Depressed people perform poorly on cognitive tasks; however, under certain conditions they show intact cognitive performance, with physiological reactivity consistent with needing to recruit additional cognitive control. We hypothesized that this apparent compensation is driven by the presence of affective processes (e.g., state anxiety), which in turn are moderated by the depressed individual’s motivational state. Clarifying these processes may help researchers identify targets for treatment that if addressed may improve depressed patients’ cognitive functioning. To test this hypothesis, 36 participants with unipolar depression and 36 never-depressed controls completed a problem-solving task that was modified to elicit anxiety. The participants completed measures of motivation, anxiety, sadness, and rumination, while pupillary responses were continuously measured during problem-solving, as an index of …