Using a simple neural model comprising between two and four neurons, it is concluded that speed of neuron conduction is not the probable basis of the intelligence quotient (IQ)-reaction time (RT) correlation. This result illustrates that neural modeling can be applied to biological theories of individual differences in intelligence. (SLD)

Two theoretical models of visual attention and contingent learning were presented to provide a framework for the consideration of how observed individual differences in infant behavior may interact with nonsocial stimuli and caretaker-mediated stimuli to influence the individual's development of patterns of visual attention and contingency…

Explored genetic and environmental etiologies of individual differences in printed word recognition and related skills in identical and fraternal twin 8- to 18-year-olds. Found evidence for moderate genetic influences common between IQ, phoneme awareness, and word-reading skills and for stronger IQ-independent genetic influences that were common…

This paper discusses applications of intelligence tests in schools, considering Binet's original warnings that his tests were primarily useful for identifying students needing intervention and inappropriate for classifying normal students. American applications of Binet's work for ranking are seen as stages of shifting from remedial to custodial…

Longstreth's critique of Jensen's research on the relationship of IQ to individual differences in visual reaction time (RT), measured in the Hick paradigm, is said to have numerous errors of fact and interpretation, some trivial and some of theoretical importance. (Author/LMO)

This essay presents arguments in favor of continuing individualized intelligence testing in schools. Issues discussed include questions of validity in the concept of intelligence and its testing, ethical issues, legal issues, racial/minority and cultural issues, poor correlation between test results and teaching, and alternatives proposed by…