Sibling quarrels and maternal intervention: individual differences in understanding and aggression.

Individual differences in the nature and frequency of conflict behaviour between 18-24 month old children and their older siblings were investigated in a sample of 43 sibling pairs observed at home with their mothers. By 24 months, relatively mature behaviour such as conciliation, teasing, reference to social rules and justification for prohibition were observed. These behaviours were correlated with maternal and sibling reference to social rules and feelings 6 months earlier; physical aggression was correlated with earlier sibling physical aggression and maternal involvement. Sibling status and type of maternal intervention were not related to frequency and duration of sibling conflict.