In 1855, a study conducted by Edward Jarvis concluded that, "the pauper class furnishes in ratio of its numbers, 64 times as many cases of insanity as the independent class." *
In light of recent catastrophic massacres in America it's now reasonable to conclude that learned helplessness is a feature of the collective American psyche thus preventing legislation designed to limit arms sales to a paranoid population.
*Edward Jarvis, M.D. (1803-1884)
Edward Jarvis may be called the first American psychiatric epidemiologist. He became a leading authority on vital statistics in the U.S. during the period 1850 to 1870.
Jarvis was born in Massachusetts and educated at Harvard (M.D., 1830). In 1840, at the request of educator Horace Mann, he published a book on health for use in schools, Practical Physiology for the Use of Schools and Families (Philadelphia, 1848) which was later translated into a number of languages, including Japanese.
Jarvis had studied the Federal Census for 1840 and found errors relating to the counting of mentally ill persons.
He became a member of the existing American Statistical Society and president for many years, and on behalf of the Society, he wrote a petition to Congress to revise procedures for gathering census data, entitled "Statistics of insanity in the U.S." (Boston Medical & Surgical Journal, v. 27, September 21, 1842). He later served as a consultant to the Census Bureau for the 1850, 1860, and 1870 census activities.
In 1860, Jarvis was an official delegate for the Statistical Society to an International Statistical meeting in England and visited asylums there. Psychiatric historian Gerald Grob wrote, "Jarvis contributed to a newer synthesis that merged medicine, morality and social science." (G. Grob, Edward Jarvis and the Medical World, Knoxville: Univ. of Tennessee Press, 1978, p. 221).