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Lamb, Diane J.; Middeldorp, Christel M.; van Beijsterveldt, Catarina E. M.; Bartels, Meike; van der Aa, Niels; Polderman, Tinca J. C.; Boomsma, Dorret I. – Journal of the American Academy of Child & Adolescent Psychiatry, 2010
Objective: To explain the differential course of anxiety and depression in individuals from childhood to adulthood by examining age-related changes in the genetic and environmental etiology of anxious and depressive symptoms. Method: A sample of 1470, 1839, and 2023 Dutch twins aged 12, 14, and 16 years reported on symptoms of anxious depression…
Descriptors: Age Differences, Nature Nurture Controversy, Risk, Children
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Schneiders, Josien; Nicolson, Nancy A.; Berkhof, Johannes; Feron, Frans J.; deVries, Marten W.; van Os, Jim – Journal of Research on Adolescence, 2007
Disturbances in affect have been linked to problem behavior in adolescence and future psychopathology, but little is known about how such disturbances manifest themselves in everyday contexts. This study investigated daily mood in Dutch 7th graders, aged 11-14. Cluster analysis of problem measures distinguished high-risk (n=25) and low-risk…
Descriptors: Early Adolescents, Psychopathology, Adolescents, Multivariate Analysis