The neuroscience of human intelligence differences

@article{Deary2010TheNO,
  title={The neuroscience of human intelligence differences},
  author={Ian J. Deary and Lars Penke and Wendy Johnson},
  journal={Nature Reviews Neuroscience},
  year={2010},
  volume={11},
  pages={201-211}
}
Neuroscience is contributing to an understanding of the biological bases of human intelligence differences. This work is principally being conducted along two empirical fronts: genetics — quantitative and molecular — and brain imaging. Quantitative genetic studies have established that there are additive genetic contributions to different aspects of cognitive ability — especially general intelligence — and how they change through the lifespan. Molecular genetic studies have yet to identify… Expand
Genetic variation, brain, and intelligence differences
TLDR
The last 10 years or so of molecular genetic (DNA-based) research on intelligence is reviewed, including the discovery of genetic loci associated with intelligence, DNA-based heritability, and intelligence’s genetic correlations with other traits. Expand
Genes, Cells and Brain Areas of Intelligence
TLDR
The latest developments in the search for the biological basis of intelligence are discussed and how specific genes that have been identified generate cellular properties associated with intelligence and may ultimately explain structure and function of the brain areas involved. Expand
The Dynamic Associations Between Cortical Thickness and General Intelligence are Genetically Mediated.
TLDR
This study examines the genetic contributions to CT-intelligence relationships using a genetically informative longitudinal sample of 813 typically developing youth, imaged with high-resolution MRI and assessed with Wechsler Intelligence Scales (IQ). Expand
The Shared Genetic Basis of Human Fluid Intelligence and Brain Morphology
TLDR
The results suggest a shared genetic basis between fluid intelligence and Broca9s speech and Wernicke9s language areas and motor regions, and may contribute to the understanding of the biological substrate of human fluid intelligence. Expand
Vive les differences! Individual variation in neural mechanisms of executive control
TLDR
Recent progress toward identifying the genetic and environmental sources of variation in neural traits, in combination with progress in identifying the causal relationships between neural and cognitive processes, will be essential for developing a mechanistic understanding of executive control. Expand
The Neuroscience of Intelligence
The Neuroscience of Intelligence explores intriguing ideas about the neuroscientific and genetic bases of intelligence such as that genes play a more critical role than does environment inExpand
Neural correlates of cognitive ability
  • A. Brancucci
  • Psychology, Medicine
  • Journal of neuroscience research
  • 2012
TLDR
It is suggested that the best neural indicators may be the ones that convey more information processing capacity to the brain, i.e., high conduction velocity of fibers and small distances between neurons, associated with a high number of neurons and an adequate level of connectivity. Expand
Neurocognitive phenomics: examining the genetic basis of cognitive abilities
TLDR
The purpose of this review is to consider the main issues involved in the phenotypic characterization of cognition, and to describe the challenges associated with the transition to genome-wide approaches. Expand
Molecular Genetic Studies of Cognitive Ability
TLDR
Large-scale genetic studies performed in the last few years significantly expanded the knowledge on the molecular basis of human cognitive abilities and made it possible to explain up to 20% of the 50% inheritance of intelligence. Expand
Genetic architecture of cognitive traits.
TLDR
In this review, what progress has been made in understanding the genetics of cognitive traits is examined, from studies that have identified single genes implicated in intellectual disabilities, through studies investigating the missing and hidden heritability of cognitive abilities in the general population, and finally to studies looking at "high intelligence" samples. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 200 REFERENCES
Genetic foundations of human intelligence
TLDR
The human intelligence phenotype is described, the evidence for its heritability is summarized, an overview of and comment on molecular genetic studies are provided, and future progress in the field is commented on. Expand
Genetic Contribution to Variation in Cognitive Function: An fMRI Study in Twins
TLDR
There were genetic influences on brain activation in language-relevant brain circuits that were atypical for numerical working memory tasks as such, suggesting that differences in cognition might be related to brain activation patterns that differ qualitatively among individuals. Expand
Genetic influences on brain structure
TLDR
Detailed three-dimensional maps revealing how brain structure is influenced by individual genetic differences are reported, and may shed light on the heritability of cognitive and linguistic skills, as well as genetic liability for diseases that affect the human cortex. Expand
Multiple Bases of Human Intelligence Revealed by Cortical Thickness and Neural Activation
TLDR
The finding that fluid and crystallized components of intelligence are related to brain function and structure with a distinct profile of association across brain regions is validated by generating a neurometric prediction model of intelligence quotient (IQ) that explained 50% of variance in IQ in an independent sample. Expand
Genetic Contributions to Human Brain Morphology and Intelligence
Variation in gray matter (GM) and white matter (WM) volume of the adult human brain is primarily genetically determined. Moreover, total brain volume is positively correlated with generalExpand
Individual differences in executive functions are almost entirely genetic in origin.
TLDR
A multivariate twin study of 3 executive functions (inhibiting dominant responses, updating working memory representations, and shifting between task sets), measured as latent variables, examined why people vary in these executive control abilities and why they are correlated but separable from a behavioral genetic perspective. Expand
Genetic influences on human brain structure: A review of brain imaging studies in twins
TLDR
An overview of structural Magnetic Resonance (brain) Imaging studies in twins is presented, which focuses on the influence of genetic factors on variation in healthy human brain volume. Expand
Brain spontaneous functional connectivity and intelligence
TLDR
The findings suggest that brain activity may be relevant to the differences in intelligence even in the resting state and in the absence of an explicit cognitive demand, which could provide a new perspective for understanding the neural basis of intelligence. Expand
The neuroanatomy of general intelligence: sex matters
TLDR
Men and women apparently achieve similar IQ results with different brain regions, suggesting that there is no singular underlying neuroanatomical structure to general intelligence and that different types of brain designs may manifest equivalent intellectual performance. Expand
Big-brained people are smarter: A meta-analysis of the relationship between in vivo brain volume and intelligence
The relationship between brain volume and intelligence has been a topic of a scientific debate since at least the 1830s. To address the debate, a meta-analysis of the relationship between in vivoExpand
...
1
2
3
4
5
...