Aggression
Conduct Disorder
Bullying
Causes of Social Behavior III: Biological and Environmental Influences
Adler's Individual Psychology
Socioemotional Development during Infancy
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Updated: May 23, 2026

The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
Published on: July 4, 2013
1Faculty Member of MPH at School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA. jhliu@nursing.upenn.edu
Aggressive behavior, common in healthcare, has varied causes across all life stages. Understanding age-specific risk factors helps nurses prevent and treat aggression effectively.
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