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Psychoses in identical twins

A contribution to the study of the etiology of functional psychoses

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Conclusions

  1. 1.

    Identical twins are equal in inheritance.

  2. 2.

    The study of the incidence of mental disorders in identical twins may be an aid in the determination of causal factors, and in distinguishing hereditary from environmental factors.

  3. 3.

    Dementia præcox or manic-depressive psychosis rarely occurs in only one of a pair of identical twins.

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Merriman, W.E. Psychoses in identical twins. Psych Quar 7, 37–49 (1933). https://doi.org/10.1007/BF01572716

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  • DOI: https://doi.org/10.1007/BF01572716

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