German Parents and Educators of Two to Four-Year-Old Children as Informants for the Strengths and Difficulties Questionnaire (SDQ).

Screeners are used in early intervention and early childhood education and care programs to identify children's potential need for further evaluation and diagnostics. The Strengths and Difficulties Questionnaire (SDQ) is a brief behavioral screening instrument that can be completed by both parents and educators to assess the social and emotional traits of children. However, multiple informants' reports vary. In this study, the extent to which parents' (n = 241) and educators' (n = 157) differ and agree in their assessments of children aged 3.5 years on average, was examined. T-tests were used to examine differences between informants and correlations within a multitrait-multimethod matrix (MTMM) in their agreement. Results showed moderate to high levels of rater agreement ranging from r = .35 and r = .53 on the five subscales of the SDQ. We found that hyperactivity, peer relationship problems, and prosocial behavior vary due to meaningful reasons, e.g., the home vs. pre-school setting, and the informant's relationship towards the child. Hyperactivity seems to be relatively consistent across settings. Methodological variations might explain differences in emotional symptoms and conduct problems. Considering ratings from multiple informants outlines a more comprehensive view of children's behavior and should be preferred over single-informant research designs.