alexa Trends in preschool lead exposure, mental retardation, and scholastic achievement: association or causation?
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Rick Nevin

Abstract Share this page

This study shows that 1936–1990 preschool blood lead trends explain 65% of the 1948–2001 variation in USA mental retardation (MR) prevalence, 45% of the 1953–2003 variation in the average scholastic achievement test (SAT) verbal score, and 65% of the 1953–2003 variation in the average SAT math score. These temporal relationships are characterized by best-fit time lags (highest R2 and t-value for blood lead) consistent with lead-induced cognitive damage in the first year of life: a 12-year lag for school-age MR, and a 17-year lag for SAT scores. Recent shifts in age-specific MR prevalence are consistent with recent trends in preschool blood lead. SAT and MR trends by race are consistent with racial differences in how 1960s slum clearance affected childhood exposure to severe lead paint hazards. SAT trends by Hispanic origin are consistent with an especially sharp fall in preschool blood lead in New York City since 1970.

This article was published in Environmental Research and referenced in Journal of Addiction Research & Therapy

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords