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Composition of IQ Gains What has been driving the gains in intelligence?

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English: Composition of IQ Gains

What has been driving the gains in intelligence?

There are many competing and complementary explanations: from nutrition and health improvements, greater levels of education, to the increasingly abstract nature of human existence.

In James Flynn’s book What Is Intelligence?: Beyond the Flynn Effect, he decomposes the gains in IQ found for American children in the Wechsler Intelligence Scale for Children (WISC) and finds that much of the gains have come from the subtests that focus on abstract thinking (similarities test and Raven’s progressive matrices). Only a small portion of the gains is due to improvements in knowledge of basic information, arithmetic and vocabulary. This observation would support the idea that increases in IQ have been driven by the changing way in which we live.
Date
Source https://web.archive.org/web/20220306071619/https://ourworldindata.org/intelligence
Author Mohamed Nagdy

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