Scores on cognitive tasks used in intelligence tests correlate positively with each other, that
is, they display a positive manifold of correlations. The positive manifold is often explained …

The mutualism model, an alternative for the g-factor model of intelligence, implies a
formative measurement model in which “g” is an index variable without a causal role. If this …

The positive manifold of intelligence has fascinated generations of scholars in human ability.
In the past century, various formal explanations have been proposed, including the …

The nature of the general factor of intelligence, or g, is examined. This article begins by
observing that the finding of a general factor of intelligence appears to be inconsistent with …

Cronbach's (1957) famous division of scientific psychology into two disciplines is still
apparent for the fields of cognition (general mechanisms) and intelligence (dimensionality of …

The gains of scores on standardized intelligence tests (ie, Flynn effect) have been the
subject of extensive debate concerning their nature, causes, and implications. The aim of the …

Abstract The Cognitive Differentiation–Integration Effort (CD–IE) hypothesis predicts that the
dimension of life history speed (K) regulates the strength of the correlation among cognitive …

Why do scores on most cognitive ability tests correlate positively? The fact that people who
score highly on one test tend to score highly on others±that some people are more …

In the introduction to the present series of volumes, Sternberg (1982) pointed out that" Until
the second half of the 20th century, two theoretical questions seemed to predominate in the …

We present a theory of mental architecture and development focusing on general
intelligence (g). The theory integrates psychometric and developmental theories of …