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Some studies suggest that IQ remains stable from childhood to old age, while other studies indicate that certain aspects of IQ, such as Performance IQ, may increase or show variability due to factors like health, education, and brain changes.
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The relationship between IQ and aging is a complex and multifaceted topic. Researchers have explored how intelligence changes over the lifespan, considering factors such as cognitive decline, the stability of intelligence, and the impact of early-life IQ on later cognitive abilities. This synthesis aims to present key insights from multiple studies to address whether IQ changes as individuals get older.
Stability of IQ Over Time:
Variability in Cognitive Performance:
Impact of Aging on Different Types of Intelligence:
Influence of Early-Life IQ on Later Cognitive Health:
Effects of Health and Lifestyle Factors:
In summary, while IQ shows considerable stability from childhood to old age, there is notable variability in cognitive performance among older adults. Fluid intelligence tends to decline with age, whereas crystallized intelligence remains stable or improves. Early-life IQ is a significant predictor of cognitive health in later years, and various health and lifestyle factors also play a role in cognitive aging.
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