Objective: The self-report Strengths and Difficulties Questionnaire (SDQ) is widely used globally; hence, the validity of the intergroup comparisons is essential. This study examined the structure of the self-report SDQ in a large multinational adolescent sample, tested its measurement invariance across genders and countries, and compared youth mental health in 12 European and Asian countries.

Method: This study is part of the Eurasian Child Mental Health Study (EACMHS), a cross-cultural research study of child and adolescent well-being and mental health in 12 Asian and European countries. The sample (N = 26,306) came from a cross-sectional school-based survey of adolescents. Confirmatory factor analysis was used to assess a common measurement model for the self-report SDQ and the measurement invariance of the model across gender and country.

Results: Fit indices in the total sample, in each gender, and in each of the 12 countries separately supported the use of the first-order 3-factor model (without the reverse-coded items) as a common measurement model for the self-report SDQ. Measurement invariance analyses provided good support for configural, metric, and scalar invariance across gender; however, metric invariance across countries was not supported. There were significant gender main effects for all SDQ subscales except for hyperactivity/inattention. Culture had significant main effects and moderated the magnitude of gender differences in all subscales.

Conclusion: The present findings support the use of the correlated 3-factor model comprising the positive dimension of prosocial behavior and 2 broad groupings of internalizing and externalizing problems, without the reverse-coded problem items, as a common measurement model for the self-report SDQ internationally.