The Flynn effect,which is the raising of the median IQ score in Western countries in the course of the 20th century,is explained by ____.

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The Flynn effect is largely explained by environmental factors such as improved education, nutrition, and healthcare over the course of the 20th century. While genetics and neurological development may play a role, they are not considered the primary drivers of the Flynn effect.

The Flynn Effect,which Is the Raising of the Median IQ