Lester D
Richard Stockton College of New Jersey, Pomona 08240-0195, USA.
Psychol Rep. 1998 Oct;83(2):686. doi: 10.2466/pr0.1998.83.2.686.
Social indicators for 43 American states in 1990 were used to form two factors which have been labeled introversion and neuroticism. In states classified as more introverted suicide rates were higher, while those classified as more neurotic had higher suicide and homicide rates.