This study examines the relationship between aggressive problem-solving strategies and aggressive behaviour, and the intervening role of social acceptance in that relationship. The subjects were 780 I4-year-old adolescents (382 girls and 398 boys). They completed a questionnaire measuring social problem-solving strategies, while assessments of aggressive behaviour and social acceptance were obtained by peer ratings. The results showed that aggressive problem-solving strategies were only moderately related to aggressive behaviour, social acceptance playing an important role. Those who received incongruent social feedback, i.e. scored high on social acceptance even though they behaved aggressively, or low although they behaved nonaggressively, expressed aggressive problem-solving strategies which conflicted with their actual behaviour. Those who received congruent social feedback, on the other hand, i.e. scored high on social acceptance if they behaved non-aggressively, or low if they behaved aggressively, had >:trategies which were in line with their actual aggressive behaviour. Analyses of gender differences showed that aggressive problem-solving strategies were related to aggressive behaviour and social acceptance more among boys. The findings are discussed in terms of social information-processing models and social knowledge about the self.