Efficiency of mitochondrial functioning as the fundamental biological mechanism of general intelligence (g)

Psychological Review
David C Geary

Abstract

General intelligence or g is one of the most thoroughly studied concepts in the behavioral sciences. Measures of intelligence are predictive of a wide range of educational, occupational, and life outcomes, including creative productivity and are systematically related to physical health and successful aging. The nexus of relations suggests 1 or several fundamental biological mechanisms underlie g, health, and aging, among other outcomes. Cell-damaging oxidative stress has been proposed as 1 of many potential mechanisms, but the proposal is underdeveloped and does not capture other important mitochondrial functions. I flesh out this proposal and argue that the overall efficiency of mitochondrial functioning is a core component of g; the most fundamental biological mechanism common to all brain and cognitive processes and that contributes to the relations among intelligence, health, and aging. The proposal integrates research on intelligence with models of the centrality of mitochondria to brain development and functioning, neurological diseases, and health more generally. Moreover, the combination of the maternal inheritance of mitochondrial DNA (mtDNA), the evolution of compensatory nuclear DNA, and the inability of evolutionar...Continue Reading

Citations

May 28, 2020·Journal of Intelligence·Lazar Stankov
Jul 2, 2020·Journal of Intelligence·Péter Przemyslaw Ujma, Kristof Kovacs
Oct 5, 2019·Journal of Intelligence·Robert J Sternberg
Apr 5, 2020·Journal of Intelligence·Alexander P Burgoyne, Randall W Engle
Aug 30, 2020·Journal of Intelligence·Tobias Debatin
Oct 28, 2019·Perspectives on Psychological Science : a Journal of the Association for Psychological Science·Alexander O SaviGunter K J Maris
Feb 23, 2020·Trends in Neuroscience and Education·Michael I Posner, Aron K Barbey

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