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Some studies suggest IQ is moderately stable over time, while other studies indicate that IQ can change due to factors like brain structure changes, cognitive interventions, and compensatory processes.
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The stability of IQ over time is a critical topic in psychological and educational research. Understanding whether IQ remains consistent throughout an individual's life or fluctuates due to various factors can have significant implications for educational planning, psychological assessment, and cognitive development theories.
General Stability of IQ Over Time
Variability in IQ Stability Based on Age and Developmental Stage
Impact of Initial IQ Level on Stability
Influence of Specific Conditions on IQ Stability
Environmental and Genetic Influences
Fluctuations in IQ During Adolescence
Overall, IQ is generally stable over time, particularly when measured over shorter intervals and as individuals age. However, stability can vary based on initial IQ levels, specific conditions such as dyslexia or schizophrenia, and developmental stages. Genetic factors increasingly influence IQ stability as individuals grow older, while environmental factors play a diminishing role. Notably, adolescence is a period where significant fluctuations in IQ can occur, linked to brain development. These insights underscore the complexity of IQ stability and the need for careful consideration in psychological and educational assessments.
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