Abstract
Abstract. The Strengths and Difficulties Questionnaire (SDQ) aims to assess problems in the psychological adjustment of children and youths. In this paper, we present results from an analysis of the structure of the SDQ. Data were collected from a community sample of 582 children and adolescents aged 10–19 years in Poland. The results showed that the bi-factor model yielded a good fit to the data. Out of five original SDQ factors, only emotional symptoms and prosocial behavior scales were distinguished from the general factor of difficulties. Additionally, two independent facets that concerned the characteristics of unsettlement and cautiousness have been extracted from the hyperactivity and conduct scales. The achieved structure differs from the theoretically assumed structure, but the findings are consistent with the Circumplex of Personality Metatraits (CPM), which was adapted to interpret the results. Moreover, with the help of the CPM, an additional difficulty that can be introduced to the model was identified.
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