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de Ruiter, Karen P.; Dekker, Marielle C.; Douma, Jolanda C. H.; Verhulst, Frank C.; Koot, Hans M. – Journal of Applied Research in Intellectual Disabilities, 2008
Background: This study described similarities and differences in the 5-year stability and change of problem behaviour between youths attending schools for children with mild to borderline (MiID) versus moderate intellectual disabilities (MoID). Methods: A two-wave multiple-birth-cohort sample of 6 to 18-year-old was assessed twice across a 5-year…
Descriptors: Mental Retardation, Persistence, Psychopathology, Behavior Problems