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Some studies suggest IQ declines with age due to factors like brain volume changes and perceptual-motor decline, while other studies indicate that IQ can remain stable or even increase in certain populations, such as mentally retarded adults.
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The relationship between age and IQ has been a subject of extensive research. Various studies have explored how IQ changes over the lifespan, considering factors such as brain volume, cognitive abilities, and external influences like medical treatments. This synthesis aims to present a cohesive understanding of whether IQ declines with age based on multiple research findings.
General Decline in IQ with Age:
Impact of Medical Treatments:
Heritability and Environmental Influence:
Special Populations:
High-Functioning Older Adults:
Brain Volume and Cognitive Decline:
Timing and Information Processing:
The synthesis of research indicates that IQ does generally decline with age, particularly in specific cognitive domains such as perceptual-motor abilities and processing speed. This decline is influenced by factors such as brain volume reduction, medical treatments, and genetic heritability. However, the extent and nature of the decline can vary based on individual circumstances, including medical history and baseline intelligence levels.
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