Aim: These international clinical practice recommendations (CPR) for developmental coordination disorder (DCD), initiated by the European Academy of Childhood Disability (EACD), aim to address key questions on the definition, diagnosis, assessment, intervention, and psychosocial aspects ofDCDrelevant for clinical practice.Method: Key questions in five areas were considered through literature reviews and formal expert consensus. For recommendations based on evidence, literature searches on ‘mechanisms’, ‘assessment’, and ‘intervention’ were updated since the last recommendations in 2012. New searches were conducted for ‘psychosocial issues’ and ‘adolescents/adults’. Evidence was rated according to the Oxford Centre for Evidence‐Based Medicine (level of evidence [LOE] 1–4) and transferred into recommendations. For recommendations based on formal consensus, two meetings of an international, multidisciplinary expert panel were conducted with a further five Delphi rounds to develop good clinical practice (GCP) recommendations.Results: Thirty‐five recommendations were made. Eight were based on the evidence from literature reviews (three on ‘assessment’, five on ‘intervention’). Twenty‐two were updated from the 2012 recommendations. New recommendations relate to diagnosis and assessment (twoGCPs) and psychosocial issues (threeGCPs). Additionally, one new recommendation (LOE) reflects active video games as adjuncts to more traditional activity‐oriented and participation‐oriented interventions, and two new recommendations (oneGCP, oneLOE) were made for adolescents and adults withDCD.Interpretation: TheCPR–DCDis a comprehensive overview ofDCDand current understanding based on research evidence and expert consensus. It reflects the state of the art for clinicians and scientists of varied disciplines. The internationalCPR–DCDmay serve as a basis for national guidelines.What this paper adds: Updated international clinical practice guidelines on developmental coordination disorder (DCD). Refined and extended recommendations on clinical assessment and intervention for DCD. A critical synopsis of current research on mechanisms of DCD. A critical synopsis of psychosocial issues in DCD, with implications for clinical practice. The first international recommendations to consider adolescents and adults with DCD.

It is often necessary to dichotomize a continuous scale to separate respondents into normal and abnormal groups. However, because the distributions of the scores in these 2 groups most often overlap, any cut point that is chosen will result in 2 types of errors: false negatives (that is, abnormal cases judged to be normal) and false positives (that is, normal cases placed in the abnormal group). Changing the cut point will alter the numbers of erroneous judgments but will not eliminate the problem. A technique called receiver operating characteristic (ROC) curves allows us to determine the ability of a test to discriminate between groups, to choose the optimal cut point, and to compare the performance of 2 or more tests. We discuss how to calculate and compare ROC curves and the factors that must be considered in choosing an optimal cut point.