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Kim, Sangwon; Kamphaus, Randy W.; Orpinas, Pamela; Kelder, Steve H. – School Psychology International, 2010
This study examined how the manifestation of overt aggression changes during early adolescence using Hierarchical Linear Modeling. The distinct courses of physical and verbal aggression identified in this study provide support for developmental transformations in overt aggression, which would have been obscured unless aggression had been defined…
Descriptors: Ethnicity, Aggression, Early Adolescents, Gender Differences
Anastasi, Anne – 1973
Much of our thinking about contemporary social problems reflects tacit presuppositions regarding the operation of heredity and environment in human behavior. These beliefs have important implications for practical decisions. Advances in genetics, psychology, anthropology, and other disciplines have contributed much to a clarification of the…
Descriptors: Behavior Development, Behavior Problems, Biological Influences, Cognitive Development