Depression is often associated with cognitive impairments and recent studies have found that for some people, these cognitive problems persist after remission of depression. These cognitive impairments could be a risk factor for recurrence of depressive episodes. Cognitive control training aims to address these cognitive impairments and decrease the risk of recurrence of depression.~One promising operationalization of cognitive control training is the adaptive Paced Auditory Serial Addition Task, but currently, it's unclear how many sessions one should complete in order to obtain cognitive- and emotional transfer effects. By comparing multiple groups with a different number of sessions (0, 1, 5, 10, 15 and 20), with measures at post (one month after baseline) and two follow-up periods (at 3 months and 6 months after baseline), this study examines the effects of an online cognitive control training on depressive vulnerability factors.
This study aims to examine the dose-response relationship of an online adaptive cognitive control training on depressive symptomatology and rumination. Participants will be randomized over six groups, each receiving a different dose (0, 1, 5, 10, 15 or 20 sessions) of a cognitive control training in remitted depressed patients. An adaptive Paced Auditory Serial Addition Task will be used as cognitive control training.