Three Contributions to

The Theory of Sex

Sigmund Freud

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Three Contributions to the Theory of Sex

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Sigmund Freud

In this little book Freud discusses three areas of human sexuality;

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1. Sexual Pervisons or Abberations Freud concludes that “a disposition to

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perversions is an original and universal disposition of the human sexual instinct and

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that... this postulated constitution, containing the germs of all the perversions, will

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only be demonstrable in children.”

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2. The Infantile Sexuality argues that children have sexual urges, from which adult

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sexuality only gradually emerges via psychosexual development. Freud identified

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many forms of infantile sexual emotions, including thumb sucking, autoeroticism, and

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sibling rivalry in childhood.

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3. The Transformations of Puberty formalized the distinction between the 'fore-

pleasures' of infantile sexuality and the 'end-pleasure' of sexual Intercourse. Freud

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also demonstrated how the adolescent years consolidate sexual identity under the

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dominance of the genitals in puberty.

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This is the third and last edition of the essays, published in 1920.

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Total running time 3:32:38

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This LibriVox recording is in the public domain and may be reproduced, distributed or modified without

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Cover image: Lava flows from the north flank of Mount Edziza proper, from NASA Earth Wind. Cover designed by Availle.This design is in the public domain.

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