Psychology 3720F/G Chapter Notes -Longitudinal Study, Relational Aggression, Attention Deficit Hyperactivity Disorder
12 Dec 2014
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Aggression is common in childhood & adolescence, less so as development continues (transient). 2nd half of the first year, expression of anger in response to frustration: although unable to predict consequences, so they can"t intentionally inflict harm. Reports from 5-8 months old predict behaviour between 11-15 months. 2nd and 3rd years of life have more aggression, temper tantrums, and intentional use of physical force: overt physical force declines after 30 months (2 years, indirect and relational aggression emerge. Early school years, boys show physical aggression, girls show relational/indirect aggression: direct aggression related to externalizing problems (attention deficits & delinquency, indirect aggression linked to internalizing problems (depression & anxiety) In adolescence, aggression is more organized (gangs mutually reinforcing all members) Longitudinal studies show aggression is almost as stable as intelligence over time. Broidy et al. (2003) childhood phys. aggress. predicted violent delinquency in adolescent boys. Huesmann et al. (2009) did 40-year longitudinal study with same results.
