Related Experiment Video
Updated: Aug 8, 2026
06:41
Assessment of Social Interaction Behaviors
Published on: February 25, 2011
Birth order and fratricidal behaviour in Canada
1Department of Psychiatry, Université de Montréal, Québec, Canada. marleauj@videotron.ca
Psychological Reports
|July 24, 1998
In 1996, Sulloway suggested that older siblings would be more fratricidal than younger ones. In Canada from 1974 to 1955, data on fratricide and sororicide do not support this hypothesis.
In 1996, Sulloway suggested that older siblings would be more fratricidal than younger ones. In Canada from 1974 to 1955, data on fratricide and sororicide do not support this hypothesis.
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