Dissociating effects of subclinical anxiety and depression on cognitive control.

Error Rates Error rates are depicted in Figure 2 . Error rates following an incorrect response were significantly lower than those following a correct response (post-error adjustment), lower following a location-incongruent trial than following a congruent trial (PCS), and lower on location-congruent than on incongruent trials (Simon effect), all Fs (1, 64) > 27.0, all ps < .001. All two- and three-way interactions between these factors (i.e., Gratton effect and post-error modulations) were also highly significant, all Fs (1, 64) > 45.0, all ps < .001. 8 Furthermore, Depression Group interacted significantly with Current Location-Congruency, F (1, 64) = 6.0, p =.017, MSE = 721.90, as participants with elevated depression levels produced larger Simon effects (i.e., produced more errors on location-incongruent trials) than participants with low depression levels.

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Effects of Anxiety and Depression on RTs: Group Analysis Repeating the analysis with Anxiety (low group, high group) as a between-subject factor ( Figure 4 , top panel) showed that the two-way interaction of Previous Congruency × Anxiety and the four-way interaction of Previous Congruency × Current Congruency × Compatibility × Anxiety approached significance, both Fs (1, 71) > 2.95, both ps < .10.

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