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Related Concept Videos

Aggression01:47

Aggression

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...
Natural Selection and Mating Preferences01:06

Natural Selection and Mating Preferences

The principle of natural selection posits that organisms better adapted to their environment are more likely to survive and reproduce. This principle is closely intertwined with mating preferences, a key aspect of sexual selection, which evolutionary psychologists believe is driven by instincts to propagate one's genes. Such instincts significantly influence mating behaviors and preferences between genders.
Females, due to their biological roles in conception, pregnancy, and nursing, inherently...
Criticisms of the Evolutionary Perspective01:23

Criticisms of the Evolutionary Perspective

In a study where individuals posing as strangers offered compliments and proposed casual sex to students, the responses differed significantly based on gender. Not a single woman accepted the proposal, while 70% of the men agreed. This outcome provides a useful scenario to explore through the lens of evolutionary psychology and social learning theory, highlighting the diverse perspectives on human sexual behaviors.
Evolutionary psychology provides one explanation for these findings, suggesting...
Evolutionary Psychology01:20

Evolutionary Psychology

Evolutionary psychology explores the origins of human behavior and mental processes by framing them within the context of natural selection, a theory famously propounded by Charles Darwin. This field asserts that many behaviors common across human societies — ranging from instinctive fear reactions to complex social interactions — arose as evolutionary adaptations. These adaptations enhanced the survival and reproductive success of our ancestors, thereby becoming embedded in the human psyche...
Mate Choice01:20

Mate Choice

Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.
Types of Selection01:46

Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...

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A New Approach that Eliminates Handling for Studying Aggression and the "Loser" Effect in Drosophila melanogaster
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Published on: December 30, 2015

Does sexual selection explain human sex differences in aggression?

John Archer1

  • 1School of Psychology, University of Central Lancashire, Preston, United Kingdom. jarcher@uclan.ac.uk

The Behavioral and Brain Sciences
|August 21, 2009
PubMed
Summary
This summary is machine-generated.

Sexual selection theory better explains sex differences in aggression, including its development and causes, compared to social role theory. This evolutionary perspective accounts for aggression patterns, variability, and related traits in males and females.

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Area of Science:

  • Evolutionary psychology
  • Behavioral biology
  • Human behavior

Background:

  • Sex differences in aggression are well-documented but debated.
  • Existing theories include social role theory and evolutionary perspectives.
  • Understanding the drivers of these differences is crucial for behavioral science.

Purpose of the Study:

  • To propose sexual selection as a more comprehensive explanation for sex differences in aggression.
  • To contrast the explanatory power of sexual selection versus biosocial social role theory.
  • To analyze the developmental, causal, and variability aspects of aggression through an evolutionary lens.

Main Methods:

  • Comparative analysis of aggression patterns across the lifespan.
  • Examination of sex differences in risk-taking, impulsivity, and fear.
  • Integration of reproductive competition and life history theory.
  • Analysis of sex differences in traits related to sexual selection (e.g., size, maturation).

Main Results:

  • Sexual selection better explains the magnitude, nature, development, and variability of sex differences in physical aggression.
  • Aggression patterns align with male competition and female mate choice dynamics.
  • Male aggression variability links to life history strategies and reproductive competition.
  • Intimate partner aggression is explained by evolutionary conflicts and societal gender roles.

Conclusions:

  • Sexual selection provides a robust evolutionary framework for understanding sex differences in aggression.
  • Social roles significantly influence aggression, particularly in intimate partner contexts, moderating evolutionary pressures.
  • An integrated evolutionary and social role approach offers a nuanced understanding of human aggression.