23_social_dev_3 - Aggression Instrumental aggression: goal...

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1 Aggression Instrumental aggression: - goal is to obtain something - e.g. hit another child to obtain toy Hostile aggression: - goal is to hurt another - e.g. establish dominance, bullying Development of aggression 12 - 24 months: - rapid increase in instrumental aggression due to developing sense of self (”I want”) 24 - 36 months: - more likely to tease than to hurt physically - “ownership rights” (That’s mine!!) - gender differences emerge
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2 Development of aggression Development of aggression 3 - 6 years: - decrease in physical Fghts over ownership - verbal aggression increases (both sexes) - hostile aggression emerges Causes of aggression Aggression is rewarded - victim gave in, gave up toy, retreated - adults provide positive reinforcement Imitation of role models’ behavior - physical punishment
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3 Individual differences Psychobiology - aggression associated with increased levels of testosterone and decreased levels of serotonin Family environment -
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This note was uploaded on 09/19/2009 for the course PSYCH 2090 taught by Professor Goldstein, m during the Spring '07 term at Cornell University (Engineering School).

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23_social_dev_3 - Aggression Instrumental aggression: goal...

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