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Related Concept Videos

Natural Selection and Mating Preferences01:06

Natural Selection and Mating Preferences

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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,...
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Criticisms of the Evolutionary Perspective01:23

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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.
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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...
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Language Development01:22

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Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
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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.
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Types of Selection01:46

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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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The evolution of language by sexual selection.

Robert Worden1

  • 1Wellcome Centre for Human Neuroimaging, Institute of Neurology, University College London, London, United Kingdom.

Frontiers in Psychology
|January 9, 2023
PubMed
Summary

Natural selection drove early language for collaboration, while later sexual selection favored intelligence, with language as a display. This hybrid model explains language

Keywords:
cognitive linguisticslanguagepragmaticsrelevancesexual selectionsocial intelligencespeed limit for evolutiontheory of mind

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Area of Science:

  • Evolutionary biology
  • Linguistics
  • Cognitive science

Background:

  • Traditional theories of language evolution emphasize natural selection for survival benefits.
  • Natural selection alone struggles to explain the complexity and uniqueness of human language and intelligence.
  • Previous models do not fully account for the 'prodigious power' of modern language.

Purpose of the Study:

  • To propose a hybrid model for language and intelligence evolution.
  • To integrate both natural and sexual selection in explaining human language.
  • To account for the unique power and expressivity of human language.

Main Methods:

  • Theoretical modeling integrating natural and sexual selection.
  • Comparative analysis of language evolution and primate cognition.
  • Examination of developmental language acquisition in children.

Main Results:

  • A hybrid model suggests early language evolved via natural selection for cooperation.
  • Later stages involved sexual selection for intelligence, using language as a display mechanism.
  • This model explains language's power, uniqueness, and evolutionary stages.

Conclusions:

  • A hybrid natural and sexual selection model better explains language evolution than natural selection alone.
  • Sexual selection likely drove a 'runaway' process towards complex modern language.
  • The proposed evolutionary order (pragmatics, single words, syntax) aligns with child language acquisition.