A first study of the statistics of insanity and the inheritance of the insane diathesis / by David Heron.
- Heron, David
- Date:
- 1907
Licence: In copyright
Credit: A first study of the statistics of insanity and the inheritance of the insane diathesis / by David Heron. Source: Wellcome Collection.
Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.
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![From Table XVIII: 1-347,845 =r+ 2-475,5111-+ 2-601,761r' + 785,249r*+ •040,096r' + -687,312r«+ •294,567r'+ •056,523r^ r = -47. From Table XIX : 1-055,187 =r+ 2-228,3061-+ 1-991,3617-'+ -393,9867'^+ •125,342r' + -582,961r'^+-112,945r'+ -130,5671^ r = -44. and if we extrapolate for a percentage of 2*5, we should have r = -41. Table XVII. Complete Table for Fraternal Heredity. Tainted and Untainted Stocks. On 1 Basis. First Sibling. Insane Not Insane Totals ling. s> .1-1 Insane 250 1681 1931 Not Insane 1681 218555 220236 o <u Totals 1931 220236 222167 Table XVIII. Com];>lete Table for Fraternal Heredity. On 1-5 7o Bctsis. First Sibling. Insane Not Insane Totals Insane Not Insane 250 1681 1681 144498 1931 146179 Totals 1931 146179 148110 Table XIX. Complete Table for Fraternal Heredity. On 2 % Basis. First Sibling. Insane Not Insane Totals Insane Not Insane 250 1681 1681 107472 1931 109153](https://iiif.wellcomecollection.org/image/b21295608_0026.jp2/full/800%2C/0/default.jpg)
