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Ares and Babbitt in the classroom: effects of competition and reward on children's aggression.

In many competitive situations, aggression is one of several instrumental behaviors that can produce reinforcing consequences. Despite the fact that aggression precipitated by competition for valued resources is an increasingly important social problem, there is little evidence of a causal relationship. In a factorial experiment, dyads of 64 kindergarten and first-grade males played a game in a face-to-face setting that yielded a prize for the winner only. It was predicted that high levels of competition and high levels of reward magnitude would produce more aggressive behavior than lower levels of these variables. Additionally, children rated by their teachers as high in dispositional aggressiveness were anticipated to behave most aggressively in the game. Each of these predictions was confirmed on three different measures of aggression: verbal, interference, and physical. Furthermore, the data suggested that constructive action was sometimes abandoned in attempts to harm an opponent. Since competition for desirable objects is a social reality, it was concluded that conditions inhibiting aggression in these situations should be investigated.