John Turner. Statistics dealing with Hereditary Insanity, based on upwards of a Thousand Cases occuring in the Essex County Asylum. (The journal of mental science. 1896, № 142)

Abstract

The statistics of American psychiatric hospitals (Pennsylvania, New York) show that women are more likely to be affected by hereditary mental illnesses than men and more often than the latter pass on their ailment to female offspring, namely in the ratio 1, 7: 1. English statistics show that men are inherited passes more often from the father (in 1, 1 times), and to women - from mothers (in 1, 3 times more often than the father of the father).

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