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Bjarehed, Jonas; Wangby-Lundh, Margit; Lundh, Lars-Gunnar – Journal of Research on Adolescence, 2012
Patterns of nonsuicidal self-injury (NSSI) and their association with other psychological difficulties were studied in a community sample of young Swedish adolescents, by a two-wave longitudinal design with a 1-year interval. Hierarchical cluster analysis at T1 identified eight NSSI subgroups in each gender, of which five were clearly replicated…
Descriptors: Self Destructive Behavior, Injuries, Adolescents, Emotional Disturbances
Marceau, Kristine; Neiderhiser, Jenae M.; Lichtenstein, Paul; Reiss, David – Journal of Youth and Adolescence, 2012
The literature consistently shows an association between pubertal maturation and internalizing problems in girls. The association for boys is less clear. The present study examines genetic and environmental influences on the association between pubertal maturation and internalizing problems for boys and girls in two primarily Caucasian adolescent…
Descriptors: Adolescent Development, Twins, Intervention, Females
Chang, Zheng; Lichtenstein, Paul; Larsson, Henrik – Journal of Abnormal Child Psychology, 2012
Research has documented that children and adolescents with attention-deficit/hyperactivity disorder (ADHD) are at increased risk of substance use problems. Few studies, however, have focused on early-onset substance use. This study therefore investigated how the two symptom dimensions of ADHD (hyperactivity/impulsivity and inattention) are…
Descriptors: Attention Deficit Hyperactivity Disorder, Adolescent Development, Smoking, Drinking