Nevin, Rick - Volkswirtschaftliche Fakultät, … - 2008
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...
