Research on the origins of aggression suggests that acts classified as _____ first appear at about age _____ , and that prior to that time children treat their adversaries as inanimate obstacles.

Question

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Instrumental aggression, which is goal-directed behavior aimed at obtaining an object, space, or privilege, first appears at about 12 months of age. Prior to this age, children do not show aggression with the intent to harm others for personal gain but may treat others as obstacles in their way.

Research on the Origins of Aggression Suggests That Acts Classified