10 papers analyzed
These studies suggest that IQ is influenced by age, with heritability increasing and environmental influence decreasing over time, and that cognitive abilities and health outcomes related to IQ can vary significantly across different life stages.
5 papers analyzed
The relationship between IQ and age has been a subject of extensive research. Various studies have explored how IQ changes over the lifespan, the factors influencing these changes, and the implications of these changes on cognitive abilities and health outcomes.
Heritability of IQ Increases with Age:
Childhood IQ and Mortality:
Age and Cognitive Task Performance:
Differentiation of Cognitive Abilities in Childhood:
Age-Related Changes in IQ:
Stability of IQ Scores:
Impact of Early Brain Growth on IQ:
The relationship between IQ and age is multifaceted. Heritability of IQ increases with age, while shared environmental influences decrease. Childhood IQ has significant implications for mortality risk up to age 65. Cognitive abilities and IQ scores show stability across the lifespan, with fluid intelligence declining and crystallized intelligence remaining stable. Physical health mediates the effect of age on fluid intelligence. Early brain growth is a significant predictor of later IQ, highlighting the importance of early developmental factors.
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