Mental diseases: a public health problemMay, James Vance
Science
Mental diseases: a public health problem
May, James Vance
Mental health services; Psychology, Pathological
The New York statistical tables on heredity were discontinued in
1907, at which time a total of 104,013 cases had been reported. In
31,290 of these no information was available, leaving a total of
72,622, excluding the not insane. A history of insanity was shown in
the paternal branch of the family in 8.6 per cent of the ascertained
cases, in the maternal branch in 10.1 per cent, in both paternal
and maternal in 1.7 per cent, and in collateral branches in eleven
per cent,—a total of 31.4 per cent in which some form of heredity
was reported. These statistics relate only to insanity in the family
history. There were so many sources of inaccuracy that it was not
thought worth while to continue these studies after 1907. Comparisons
between the heredity of mental cases and that of normal individuals
have been rather surprising. Koller, for instance, as quoted by
Kraepelin,[67] in a comparison of 370 healthy with a similar number
of insane individuals found a history of psychopathic defects in the
immediate families of fifty-nine per cent of the former and 76.8 per
cent of the latter. Diem[68] in 1905 made an analysis of the family
history of 1193 healthy individuals. This was compared with 1850 mental
cases. Neuropathic heredity of some kind was found in 78.2 per cent of
the mental cases and 66.9 per cent of the healthy individuals. There
was, however, a history of mental diseases in the families of 38.3 per
cent of the insane patients as compared with 7.1 per cent of the normal
individuals. Somewhat different results were noted in a study of the
parents. There was a paternal or maternal history of insanity in 18.1
per cent of the families of the mental cases as compared with 2.2 per
cent in the cases of the normal individuals. In the direct parentage,
Koller found mental diseases in 57.3 per cent of the families of the
insane as compared with 28 per cent in the case of normal individuals.
Kraepelin states that the influence of the father is greater in
heredity than is that of the mother. The father, furthermore, usually
transmits to the son while the mother influences the daughter more.
Public-domain text, read in full here on John Shaqi.
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