Collective intelligence (CI) is said to manifest in a group's domain general mental ability. It can be measured across a battery of group IQ tests and statistically reduced to a latent factor called the "c-factor." Advocates have found the c-factor predicts group performance better than individual IQ. We test this claim by meta-analyzing…

IQs increased by about 30 points in the 20th century. Part of this increase may have been the result of increased standardized testing because testing improves the skills on which students are tested. But although these practices may increase general intelligence, they may impede the development of creativity and wisdom. As a result, our society…

Intelligence involves the ability to think, solve problems, analyze situations, and understand social values, customs, and norms. Intelligence is a general mental capability that involves the ability to reason, plan, think abstractly, comprehend ideas and language, and learn. Intellectual ability involves comprehension, understanding, and learning…

The aim of the study was to investigate the relationship between the Flynn effect and the effects of age differences between siblings on the intelligence difference between them. In Norway, the secular trends in intelligence-test score means vary both in magnitude and direction. We identified three periods: one period where the mean intelligence…

Lynn (2010) suggests that differences in average intelligence explain many of the differences observed across the Italian regions. This paper puts forward a methodological critique to his study, coupling it with an empirical test showing that Lynn's analysis is not sufficiently robust to support its conclusions. (Contains 2 tables.)

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…

In this article, time effects on intelligence test scores have been investigated. In particular, we examined whether the "Flynn effect" is manifest in children from the middle and higher IQ distribution range, measured with a child intelligence test based on information processing principles--the Leiden Diagnostic Test. The test was administered…

In January, W. H. Brady Scholar Charles Murray stepped back from current education debates about reauthorization of the 2002 No Child Left Behind Act and education funding in the president's budget to ask more fundamental questions about the goals that should shape American education in the future. This "On the Issues" is adapted from…

Discusses how viewing intelligence as a learned skill and not a genetic gift may make the standard IQ test a thing of the pedagogical past. (GB/Editor)

The author suggests that more empirical evidence will have to be found before environmental influence can be declared insufficient to the cause of Negro-White I.Q. score differences. (Editor/RT)

Examines the emphasis in our culture which is placed on intelligence as measured by educational tests and suggests four possibilities to prevent an educational aristocracy. (RB)

Discusses an alternative approach to intelligence tests as a measure of intelligence. The approach is based on three classes of performance dealing with a person's choice of an internal representation for a problem, strategies for manipulating the representation, and abilities to execute elementary information processing steps required by the…