Americans’ IQ scores are lower in some areas, higher in one
news.northwestern.edu
A new study from Northwestern University has found evidence of a reverse “Flynn effect” in a large U.S. sample between 2006 and 2018 in every category except one. For the reverse Flynn effect, there were consistent negative slopes for three out of the four cognitive domains.
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The original was posted on /r/todayilearned by /u/tyrion2024 on 2025-03-11 02:20:22+00:00.

Original Title: TIL a 2023 study examined the cognitive ability scores of nearly 400,000 Americans between 2006-2018 and found that over that 13-year period, Americans’ IQ scores had dropped in three out of the four cognitive domains included in the analysis.