Researchers have postulated that deficits in cognitive control are associated with, and thus may underlie, the perseverative thinking that characterises generalised anxiety disorder. We examined associations between cognitive control and levels of spontaneous state rumination following a stressor in a sample of healthy control participants and participants with GAD. We assessed cognitive control by measuring working memory capacity, defined as the ability to maintain task-relevant information by ignoring task-irrelevant information. To this end, we used an affective version of the reading (...) span task with valenced distractors. Lower WMC in the presence of negative distractors was associated with greater state rumination in the GAD group, but not in the CTL group. These findings suggest that difficulty maintaining task-relevant information due to interference from negative distractors contributes to perseverative thinking in GAD. (shrink)

Individuals with social anxiety disorder engage in post-event processing, a form of perseverative thinking. Given that deficits in working memory might underlie perseverative thinking, we examined working memory in SAD with a particular focus on the effects of stimulus valence. SAD and healthy control participants either maintained or reversed in working memory the order of four emotional or four neutral pictures, and we examined sorting costs, which reflect the extent to which performance deteriorated on the backward trials compared to the (...) forward trials. Emotionality of stimuli affected performance of the two groups differently. Whereas control participants exhibited higher sorting costs for emotional stimuli compared to neutral stimuli, SAD participants exhibited the opposite pattern. Greater attention to emotional stimuli in SAD might facilitate the processing of emotional stimuli in working memory. (shrink)

We investigated the association between cognitive control and individual differences in cortisol response to stress in participants with generalised anxiety disorder and in never-disordered c...

Anxiety disorders represent the most common class of mental illness. In fact, approximately one-third of adults report clinically significant symptoms of anxiety (Kessler et al., 2012), of which sy...

Rumination has been linked to the onset and course of depression. Theoretical models and empirical evidence suggest that deficits controlling negative material in working memory underlie rumination. However, we do not know which component of cognitive control contributes most to rumination, and whether different components predict the more maladaptive versus the more adaptive forms of rumination. We aimed to advance theory and research by examining the contribution of different facets of cognitive control to the level and trajectory of brooding and (...) reflection. At baseline, participants completed three cognitive tasks that assessed their inhibition, shifting, and updating biases, respectively. Next, using experience sampling methodology, participants rated their level of rumination and negative affect nine times during the 48 h after their most stressful exam. At each time point, higher levels of brooding, but not reflection, predicted higher levels of negative affect at the next time point. Furthermore, several facets of shifting and inhibition, but not updating, predicted brooding immediately after the exam and its trajectory of change over 48 h. Additionally, difficulty inhibiting neutral words predicted both brooding and reflection. These findings inform theoretical models describing the role of cognitive control in brooding and reflection. (shrink)