The trend toward increasing average IQ is called the Flynn effect.
The term derives from a researcher, James R Flynn, who documented a rise in average IQ over time. This means that younger generations on average perform better than older generations on IQ tests. Estimates suggest that IQ test scores increase by about 10 points with each succeeding generation.
Various explanations have been given for this phenomenon. Improvements in healthcare and nutrition standards are linked to improvements in mental capabilities. The expansion of education and familiarity with various types of tests could also be contributing factors. Rapid technological advancements in recent decades have created a more complex and stimulating environment, thus promoting mental sharpness.
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