In this commentary, the author focuses on the claim summarized in the last sentence of the target article's abstract. To begin, the concept of talent does not require the existence of "innate constraints to the attainment of elite achievement". On the contrary, genetic endowment may merely influence the rate at which domain-specific expertise is…

Mango ("Mangifera indica") is a popular fruit and an important cash crop of southeast Asia. The mango malformation disease has been responsible for the degraded yield of the crop now for a long time (Kumar and Chakrabarti, 1997). The disease is difficult to cure and often takes the shape of an epidemic. Though much study has been done…

IQ test scores have risen steadily across the industrialized world ever since such tests were first widely administered, a phenomenon known as the Flynn effect. Although the effect was documented more than 2 decades ago, there is currently no generally agreed-on explanation for it. The author argues that the phenomenon heterosis represents the…

The stimulus display duration required for subjects to accurately compare the length of two line lengths (known as Inspection Time: IT), reliably correlates around 0.5 with general intelligence. It is not clear, however, if this correlation reflects general "speed of processing", or some other element of the task. There is a consequent need for…

The Kaufman Assessment Battery for Children-Second Edition (KABC-II) is a departure from the original KABC in that it allows for interpretation via two theoretical models of intelligence. This study had two purposes: to determine whether the KABC-II measures the same constructs across ages and to investigate whether those constructs are…

At a time when intelligence agencies have never been more important, universities are teaching and studying just about everything else. In 2006 only four of the top 25 universities offered undergraduate courses on intelligence agencies or issues. Scholarly inattention is equally glaring in academic publishing. Between 2001 and 2006, the three most…

This article proposes that a complete account of cognitive evolution may have to accommodate a domain-general source of variance in mental abilities accounting for differences among primate taxa. Deaner, van Schaik, and Johnson [Deaner, R.O., van Schaik, C.P. and Johnson, V.E. (2006). Do some taxa have better domain-general cognition than others?…

Inspection of the 1972 revised norms for the Stanford-Binet demonstrate that the average mental age for a particular chronological age (CA) no longer numerically corresponds to that CA. Thus, mental ages derived from the test cannot any longer be interpreted as mental ages. A table of test ages based on the 1972 norms is provided. (Author)

The Wechsler Intelligence Scale for Children was administered to 80 retarded youngsters from ages 6 to 16 years. The factors found for the retarded children are similar to those found for normal children. This similarity suggests there may be no qualitative differences in intelligence structure for normal and retarded children. (Author/SJL)

Presents problems in intelligence testing, then proposes rationale to cease the administration of intelligence tests. (DW)

Concentrates on the notion that a person's intellectual competence can be assessed by observing what he does when confronted with tasks that any child can cope with. (Author)

Presents rationale to support the contention that IQ tests are inadequate for Spanish-surnamed children because they do not use appropriate cultural and linguistic life experiences. (DW)

This article focused on societal reaction to deviance, definers rather than the defined, on the presupposition that because the deviant is one so labelled, by studying the definers one is also indirectly studying the nature of the defined. (Author/RK)

Periodically, fears are voiced that the intelligence level of the United States population is falling. Historically, this fear has been linked to the belief that fertility is inversely related to intelligence. Evidence for that belief is sparse and may be an artifact of the failure of researchers to consider completed families. An inverse…

The multitrait-multimethod matrix was used to determine the convergent and divergent validity of the conceptual tempo. (Author/BJG)