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Related Concept Videos

Aggression01:47

Aggression

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Humans engage in aggression when they seek to cause harm or pain to another person. Aggression takes two forms depending on one’s motives: hostile or instrumental. Hostile aggression is motivated by feelings of anger with intent to cause pain; a fight in a bar with a stranger is an example of hostile aggression. In contrast, instrumental aggression is motivated by achieving a goal and does not necessarily involve intent to cause pain (Berkowitz, 1993); a contract killer who murders for...
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Secondary Motives: Affiliation Motivation and Aggression Motivation01:21

Secondary Motives: Affiliation Motivation and Aggression Motivation

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Affiliation motivation is the intrinsic desire to connect with others and belong to a social group, which plays a crucial role in forming and maintaining personal relationships. This type of motivation is essential for psychological well-being, as it provides individuals with a sense of community and support. An example of this is a student who joins a study group in order to feel a sense of connection. People with high affiliation motivation actively seek social approval, take satisfaction in...
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Fixed Action Patterns01:06

Fixed Action Patterns

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A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
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Bullying02:04

Bullying

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A modern form of aggression is bullying. As you learn in your study of child development, socializing and playing with other children is beneficial for children’s psychological development. However, as you may have experienced as a child, not all play behavior has positive outcomes. Some children are aggressive and want to play roughly. Other children are selfish and do not want to share toys. One form of negative social interactions among children that has become a national concern is...
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Related Experiment Video

Updated: Feb 16, 2026

Studying Aggression in Drosophila fruit flies
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Studying Aggression in Drosophila fruit flies

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Group Aggression.

James Densley1, Jillian Peterson2

  • 1Metropolitan State University, MN, USA.

Current Opinion in Psychology
|December 28, 2017
PubMed
Summary

This review explores theories of group aggression, including realistic conflict theory and social identity theory. It examines empirical findings on aggressive groups like gangs and terrorist organizations for future research directions.

Area of Science:

  • Social Psychology
  • Sociology

Background:

  • Group aggression poses significant societal challenges worldwide.
  • Intergroup relations research provides crucial insights into conflict dynamics.

Purpose of the Study:

  • To review influential theoretical frameworks of group aggression.
  • To explore empirical evidence related to aggressive groups.
  • To outline future research directions in intergroup aggression.

Main Methods:

  • Literature review of key theories in intergroup relations.
  • Examination of empirical findings on various aggressive groups.
  • Synthesis of theoretical and empirical perspectives.

Main Results:

  • Key theories include realistic conflict theory, relative deprivation theory, social identity theory, social dominance theory, and deindividuation theory.

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  • Empirical data from studies on street gangs, hate groups, rebel groups, and terrorist organizations are discussed.
  • The review highlights the current state of intergroup aggression research.

    • Conclusions:

    • Future research should integrate personal and situational factors for a comprehensive understanding of intergroup aggression.
    • Developing integrated theories is crucial for advancing the field.
    • Understanding the root causes of group aggression is vital for societal well-being.