Greenlandic norms for the parent-report and self-report versions of the Strengths and Difficulties Questionnaire (SDQ)

The Strengths and Difficulties Questionnaire (SDQ) is a brief screening questionnaire of child behaviour, used to evaluate mental health. It is applicable for children 2–17 years, available to both parents and professionals, and exists in a self-report version available from the age of 11 years. This paper aims to generate Greenlandic norms on the self-report and parent-report versions of the SDQ. In 2023, the self-report version was translated, and a representative sample of children and adolescents completed the SDQ (N = 641). In 2008, the parent-report version was translated into Greenlandic and used in a study of children’s well-being (N = 939). Data from both samples were analysed, generating normative scores. Results show significant differences between genders (effect sizes of .006-.145), and discrepancies between parent and self-report. Parents report higher total problems for boys, while self-reporting indicate higher total problems for girls. Cut-off values are higher for self-report norms than parent-report norms. Mean scores on the SDQ total score and subscales differ across age, area of living, caregiver constellation and caregiver’s educational level (effect sizes of .011–.064). With the availability of Greenlandic norms, we anticipate further use of the SDQ in clinical practice and research settings, strengthening screening and assessment of children and adolescents.