EARLY 20TH CENTURY SOCIAL ECOLOGY OF U.S. STATE IQ AND SUICIDE RATES: EVIDENCE FROM THE ARMY ALPHA AND BETA INTELLIGENCE TEST DATA OF YERKES (1921)
Consistent with a number of facts from suicide research and an evolutionary view of suicidal behavior, positive ecological (group-level) correlations between contemporary suicide rates and intelligence level have been observed in several geographical (cross-national and within-nation) studies (e.g., Lester, 1993, 1995, 2003; Voracek, 2004, 2005a, 2005b, 2006a-h, 2007). The present research extended these accounts cross-temporally to a test of the social ecology of U.S. state IQ and suicide rates during the early 20th century. Analysis of historical state suicide rates (1913–24), along with validated state IQ figures derived from the Army Alpha and Beta Intelligence Test data of Yerkes (1921), showed a clear positive correlation of state IQ with suicide rates (independent of state wealth) across the USA, thus suggesting temporal stability of the effect.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
Document Type: Research Article
Publication date: 2007-01-01
More about this publication?
- The Journal's core purpose is scientific communication in the disciplines of Social Psychology, Developmental and Personality Psychology
- Editorial Board
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Terms & Conditions
- Contact the Publisher
- Manuscript Guidelines
- Ingenta Connect is not responsible for the content or availability of external websites