Bullying
Aggression
Secondary Motives: Affiliation Motivation and Aggression Motivation
Conduct Disorder
Adler's Individual Psychology
Socioemotional Experience and Gender Development
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Updated: Apr 5, 2026

The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
Published on: July 4, 2013
Sabine Stoltz1, Antonius H N Cillessen1, Yvonne H M van den Berg1
1Radboud University, Behavioural Science Institute, Nijmegen, the Netherlands.
Peer popularity is linked to aggression, with popular youth showing more proactive aggression and less reactive aggression over time. Unpopular adolescents displayed higher reactive aggression, while stably popular ones exhibited more proactive aggression.
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