An extraordinary variety of experimental (e.g., flicker, magnetic fields) and clinical (epilepsy, migraine) conditions give rise to a surprisingly common set of elementary hallucinations, including spots, geometric patterns, and jagged lines, some of which also have color, depth, motion, and texture. Many of these simple hallucinations fall into a…

Studies with 65 adults found two new visual processing tasks, visual change detection and visual movement detection, to be correlated with inspection time and the nonverbal scores from the Alice Helm 4 test of general intelligence. Results are discussed in terms of the correlation between inspection time and intelligence and the psychobiological…

One important source of biological determinants to intellectual behavior is the immediate family of origin. When family history is taken into consideration, it is necessary to examine the environmental aspects of intellectual development in conjunction with the biological. Herein lies the usefulness of a transactional model of development over…

This paper summarizes empirical findings of research on a theory of general mental ability, based on laboratory studies of the relationship between measurements of individual differences on conventional psychometric tests and in speed and efficiency of information processes. The paper covers characteristics of "g" (general mental ability),…

Describes Arthur Jensen's contributions to the study of general intelligence ("g"). His research has led to studies of genetic intelligence and speed of cognitive processing and the study of biological correlates of "g." (SLD)

Reviews the work of Arthur Jensen, noting his extensive bibliography and characterizing his work as an extension of the British Biological-Theoretical Tradition. Proposes a new definition of "Jensenism" based on the Jansenist heresy. (SLD)

Notes that preschool compensatory education has not resulted in any appreciable, durable gains in I.Q. or scholastic achievement. Posits that compensatory programs remedied deficiencies in knowledge but not in cognitive processes. Suggests further research into the nature of intelligence and its malleability. (PGD)

Based on the premise that perception is a continual series of simple hypotheses about the external world which are built up and selected by sensory experiences, this book explores in detail some of the major findings in perception and speculates about interconnections between sensory experiences, brain function, perception, and language and…

Considers the contribution to information-processing accounts of human intelligence differences made by Arthur Jensen, commending his persistence in research and noting his reductionist orientation. Explores the question of correlated vectors studied by Jensen. (SLD)

A study of twins was conducted to determine the presence of an hereditary component in short term memory and in three aspects of verbal divergent thinking--flexibility, fluency, and originality. Results showed the existence of a significant genetic component in the trait of short term memory, while none was found in verbal divergent thinking. (AG)

The assumption that a singular biological resource pool embedded in the central nervous system results in differences in macrolevel outcomes because of the constraints it imposes on efficiencies of microlevel processing is refuted. Moderating effects on the causal pathways between microlevel and macrolevel performance are discussed. (SLD)