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Abstract

This thesis inquires into how human language relates to morality -- and shows the ways language enables, extends, and maintains human value systems. Though we ultimately need to view the relation between language and morality from many different perspectives -- biological, psychological, sociological, and philosophical -- the approach here is primarily a linguistic one informed by evolutionary theory.

At first, this study shows how natural selection relates to the problem of altruism and how language serves human moral ontogeny. Subsequently, the argument demonstrates how language helps enable cultural group selection. Moreover, as language helps influence human behavior in an altruistic direction beyond in-group non-kin (helping facilitate cultural group selection), we also consider how language can help facilitate altruistic behavior towards out-group non-kin. This therefore raises the prospect of a limited moral realism in a world of evolutionary processes.

With these issues and possibilities in mind, we consider and analyze the properties of language that help extend human morality. Specifically, discussion covers how recursion, linguistic creativity, naming ability, displacement, stimulus freedom, compositionality, cultural transmission, and categorization extend moral systems. Moreover, because language so broadly influences morality, the inquiry extends into how linguistic differences (specifically between English and Japanese) might also cause subtle differences in moral perception between Japanese and English speakers.

Lastly, we consider how moral ideas might take on a life of their own, catalytically propagating in degrees dependent and independent of human intention. That is, we consider how ideas might become memetic. After considering the serious problems of memetics, this approach employs a linguistic version of memetic theory and considers how psychological, social, and linguistic constraints may cause moral memes to attain a memetic state and spread by an independent or semi-independent replicator dynamic. Thus, some moral ideas that we possess through language may actually possess us.

@phdthesis{poulshock,
  author={Joseph W. Poulshock},
  title={Language and Morality: Evolution, Altruism and Linguistic Moral Mechanisms},
  year={2006},
  school={Theoretical and Applied Linguistics, The University of Edinburgh},
  url={http://www.isrl.uiuc.edu/~amag/langev/paper/poulshock.html}
}

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