Déjà vu All Over Again: A Unitary Biological Mechanism for Intelligence Is (Probably) Untenable.
attention
heritability
intelligence
processing speed
working memory
Journal
Journal of Intelligence
ISSN: 2079-3200
Titre abrégé: J Intell
Pays: Switzerland
ID NLM: 101635592
Informations de publication
Date de publication:
02 Jun 2020
02 Jun 2020
Historique:
received:
06
04
2020
revised:
25
05
2020
accepted:
27
05
2020
entrez:
6
6
2020
pubmed:
6
6
2020
medline:
6
6
2020
Statut:
epublish
Résumé
Nearly a century ago, Spearman proposed that "specific factors can be regarded as the 'nuts and bolts' of cognitive performance…, while the general factor is the mental energy available to power the specific engines". Geary (2018; 2019) takes Spearman's analogy of "mental energy" quite literally and doubles-down on the notion by proposing that a unitary energy source, the mitochondria, explains variations in both cognitive function and health-related outcomes. This idea is reminiscent of many earlier attempts to describe a low-level biological determinant of general intelligence. While Geary does an admirable job developing an innovative theory with specific and testable predictions, this new theory suffers many of the shortcomings of previous attempts at similar goals. We argue that Geary's theory is generally implausible, and does not map well onto known psychological and genetic properties of intelligence or its relationship to health and fitness. While Geary's theory serves as an elegant model of "what could be", it is less successful as a description of "what is".
Identifiants
pubmed: 32498282
pii: jintelligence8020024
doi: 10.3390/jintelligence8020024
pmc: PMC7713016
pii:
doi:
Types de publication
Journal Article
Langues
eng
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
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