Aggression toward siblings during the preschool years: When does it become atypical?

Melanie Dirks

Dr. Dirks is Associate Professor in the Department of Psychology at McGill University, Montréal, Canada. Data for this study came from the Multidimensional Assessment of Preschoolers Study (MAPS), a National Institute of Mental Health study led by Dr. Lauren Wakschlag of Northwestern University.

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