Article2007

General intelligence and memory span: Evidence for a common neuroanatomic framework

Roberto Colom · Rex Eugene Jung · Richard J. Haier

132 citations0/0 files storedCognitive Neuropsychology

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Cognitive Abilities and Testing Neurobiology of Language and Bilingualism Neural and Behavioral Psychology Studies

Abstract

General intelligence (g) is highly correlated with working-memory capacity (WMC). It has been argued that these central psychological constructs should share common neural systems. The present study examines this hypothesis using structural magnetic resonance imaging to determine any overlap in brain areas where regional grey matter volumes are correlated to measures of general intelligence and to memory span. In normal volunteers (N = 48) the results (p < .05, corrected for multiple comparisons) indicate that a common anatomic framework for these constructs implicates mainly frontal grey matter regions belonging to Brodmann area (BA) 10 (right superior frontal gyrus and left middle frontal gyrus) and, to a lesser degree, the right inferior parietal lobule (BA 40). These findings support the nuclear role of a discrete parieto-frontal network.

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References

1904The Psychological Bulletin 1993Human Cognitive Abilities 1999Working memory, short-term memory, and general fluid intelligence: A latent-variable approach.1998The g factor: the science of mental ability 2002Working Memory Capacity as Executive Attention 1990Reasoning ability is (little more than) working-memory capacity?!2004The Generality of Working Memory Capacity: A Latent-Variable Approach to Verbal and Visuospatial Memory Span and Reasoning.2007The Parieto-Frontal Integration Theory (P-FIT) of intelligence: Converging neuroimaging evidence

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