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Sosu, Edward M.; Schmidt, Peter – Journal of Psychoeducational Assessment, 2017
R. Goodman's Strength and Difficulties Questionnaire (SDQ) is widely used to measure emotional and behavioral difficulties in childhood and adolescence. In the present study, we examined whether the SDQ measures the same construct across time, when used for longitudinal research. A nationally representative sample of parents (N = 3,375) provided…
Descriptors: Behavior Problems, Questionnaires, Child Behavior, Screening Tests