Dorien Bangma

DECISION-MAKING IN ADHD | 133 criteria of the review were as follows: all studies included should make use of: (1) a sample of adults with ADHD that was compared to a healthy control group, and (2) one or more performance-based tasks that clearly assessed a particular domain of decision making (e.g., risky-, social-, or reward-related decision making). Decision making was defined in this study as ‘any process leading to the selection of one of several alternatives’ (after Mowinckel et al., 2015). Each performance-based task in which the participant had to make such a selection was taken into account as a decision-making task. The systematic literature search was completed on the 17 th of March 2020 and resulted in a literature list of 489 articles. The literature retrieved was supplemented with relevant literature cited in the articles found (manual search; Figure 6.1). In total, 31 studies could be included in the literature review (Appendix 6-1). The content of all of these studies has been systematically analyzed. Identification Included Eligibility Screening Records identified through database searching (filters applied) ( k = 489 ) Additional records identified through other sources (manual search) (k = 4) Records after duplicates removed ( k = 384) Records screened ( k = 384) Records excluded based on abstract ( k = 297) Full-text articles assessed for eligibility ( k = 87) Full-text articles ( k = 56) excluded for following reasons: (1) The study did not include an adult sample and/or healthy control group. (2) Decision making was not assessed by means of a performance-based decision- making task. Articles included in qualitative synthesis ( k = 31) Figure 6.1. Prisma flow diagram according to the guidelines of Preferred Reporting Items for Systematic Reviews and Meta-Analyses (Moher et al., 2009).