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Gene machen Kinder aggressiv

Genetische Faktoren sind ausschlaggebend für die Entwicklung und den Verlauf der Aggressivität bei Kleinkindern, wie Forscher an der University of Montreal herausgefunden haben. Das Team um Eric Lacourse hat das an ein- und zweieiigen Zwillingspaaren erforscht.
667 Zwillingspaare wurden in der Analyse begleitet. Ihre Mütter bewerteten aggressives Verhalten wie Beißen oder Treten im Alter von 20, 32 und 50 Monaten. "Genetische Faktoren erklärten immer einen wesentlichen Teil von individuellen Unterschieden bei physischen Aggressionen", so Lacourse.

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