Related Experiment Video

Updated: Jan 19, 2026

Aggression: Hostile and Instrumental Aggression
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Aggression: Hostile and Instrumental Aggression

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The Brief COPE: Factor Structure and Associations With Self- and Other-Directed Aggression Among Emerging Adults

Robert J Cramer1, Abby Braitman2, Claire N Bryson3

  • 1University of North Carolina Charlotte, NC, USA.

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Aggression01:47

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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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The article describes an assay for studying zebrafish’s aggression. The method uses a simple mirror and observes zebrafish’s behavioral response towards its own reflection in...
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This manuscript describes the setup, implementation, and analysis of boldness, aggression, and shoaling in zebrafish and testing for the presence of a behavioral syndrome. A standardized approach for behavioral quantification will allow for easier comparison across studies. Modifications to this protocol are possible as each assay can be run...
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Aggression is an innate behavior that evolved in the framework of defending or obtaining resources. This complex social behavior is influenced by ...
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Aggression is an innate behavior and previous fighting experience affects fighting strategy and outcome of later contests in flies. This video describes an assay used to study Drosophila's aggressive behavior. The example protocol features the assay performed in a setup that eliminates fly handling and therefore reduces stress for the animals, which would otherwise impact the subjects'...
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This video shows the resident-intruder paradigm in rats. This test is a standardized method to measure offensive aggression, defensive behavior and violence in a semi-natural setting. The use of the paradigm for social stress experiments is explained as...
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