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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 hire...
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Related Experiment Video

Updated: Jun 27, 2026

Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats
09:12

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Published on: March 17, 2019

Female impulsive aggression: a sleep research perspective.

Nina Lindberg1, Pekka Tani, Hanna Putkonen

  • 1University of Helsinki, Finland. nina.lindberg@pp3.inet.fi

International Journal of Law and Psychiatry
|December 20, 2008
PubMed
Summary
This summary is machine-generated.

Violent crime in women is rising, with many female prisoners having antisocial personality disorder. This study found similar sleep abnormalities in aggressive female offenders and aggressive males, suggesting shared biological mechanisms for impulsive aggression.

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Area of Science:

  • Neuroscience
  • Forensic Psychology
  • Sleep Medicine

Background:

  • Rising rates of violent crime among women.
  • High prevalence of antisocial personality disorder in female prisoners.
  • Unclear biological mechanisms underlying female impulsive aggression compared to males.

Purpose of the Study:

  • To investigate the biological correlates of impulsive aggression in female offenders.
  • To compare sleep architecture in female offenders with antisocial personality disorder to previously reported findings in males.
  • To explore shared biological mechanisms for aggression across sexes.

Main Methods:

  • Preliminary study involving medication-free, detoxified female homicidal offenders with antisocial personality disorder.
  • Analysis of sleep architecture, focusing on slow wave sleep (SWS).
  • Comparison of findings with existing psychiatric sleep research on male aggression.

Main Results:

  • Female offenders with antisocial personality disorder exhibited profound abnormalities in sleep architecture.
  • Increased SWS, a pattern previously observed in aggressive males, was found in this female cohort.
  • Preliminary evidence suggests shared biological features in severe impulsive aggression between sexes.

Conclusions:

  • Biological correlates of severe impulsive aggression appear to share similar features in both sexes.
  • Sleep architecture abnormalities may be a common biological marker for severe aggression.
  • Further research is warranted to elucidate the specific neurobiological pathways involved.