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Naerde, Ane; Ogden, Terje; Janson, Harald; Zachrisson, Henrik Daae – Developmental Psychology, 2014
This study investigated the normative use and developmental course of physical aggression (PA), defined as use of physical force such as hitting, biting, and kicking, from 8 to 26 months and predictors thereof. We used data from the Behavior Outlook Norwegian Developmental Study, comprising 1,159 children (559 girls and 600 boys). Both mothers and…
Descriptors: Aggression, Developmental Stages, Developmental Psychology, Toddlers