Beraldo (2010) and Cornoldi, Belacchi, Giofre, Martini, and Tressoldi (2010) (CBGMT) have eight criticisms of my paper (Lynn, 2010) claiming that the large north-south differences in per capita income in Italy are attributable to differences in the average levels of intelligence in the populations. CBGMT give results for seven data sets for IQs in…

Working with data from the PISA study (OECD, 2007), Lynn (2010) has argued that individuals from South Italy average an IQ approximately 10 points lower than individuals from North Italy, and has gone on to put forward a series of conclusions on the relationship between average IQ, latitude, average stature, income, etc. The present paper…

Several studies concerning scoring difficulties on the Wechsler intelligence scales were reviewed. Since scoring of responses on the comprehension, similarities and vocabulary subtests of the Wechsler scales demands judgements by the examiner, the possibility of poor interscorer reliability increases. More thorough scoring standards and revision…

This article examines psychometric analysis regarding the viability and limits of IQ testing in the context of "The Bell Curve." It discusses eyeball analysis versus item analysis, mean differences, validity coefficients, general intelligence, and IQ and gifted education, and urges a search for intrapersonal and environmental catalysts…

Intelligence tests should be used to help persons; they should not be used to penalize persons. Furthermore, our focus should be on treatment; it should not be on labeling. IQ testers often stigmatize young children and poor persons (children, adolescents, adults). Large groups of Black Americans, Spanish Americans, and Indian Americans are…

Data from 143 children with reading disabilities (RD), 100 with arithmetic disabilities (AD), and 121 controls (ages 6-16) found the RD and AD groups had significantly lower scores on all verbal IQ subtests. Many also showed significant differences between verbal and performance IQ scores, but so did many controls. (Contains references.)…

The validity is questioned of testing the intelligence of Mexican Americans via intelligence tests constructed for Anglo Americans. An overview is included of the literature concerned with the comparability of intelligence scores. Critiques are presented of 9 current studies utilizing intelligence test scores of Mexican Americans and Anglo…