are we getting more stupid?

What is the 'Flynn Effect"?

The Flynn effect is the substantial and long-sustained increase in both fluid and crystallized intelligence test scores that were measured in many parts of the world over the 20th century, named after researcher James Flynn (1934–2020). There are numerous proposed explanations of the Flynn effect, such as the rise in efficiency of education, along with skepticism concerning its implications. Similar improvements have been reported for semantic and episodic memory.

Flynn effect - Wikipedia

Of course, IQ tests are very very limited in what they measure:

In 1987, Flynn took the position that the very large increase indicates that IQ tests do not measure intelligence but only a minor sort of "abstract problem-solving ability" with little practical significance. He argued that if IQ gains did reflect intelligence increases, there would have been consequent changes of our society that have not been observed (a presumed non-occurrence of a "cultural renaissance").[28] By 2012 Flynn no longer endorsed this view of intelligence, having elaborated and refined his view of what rising IQ scores meant.[34]

James Flynn: IQ may go up as well as down | Psychology | The Guardian

It seems we are going backwards anyway:

NEW STUDY REVEALS SHARP DECLINE IN AMERICAN IQ SCORES AS THE “REVERSE FLYNN EFFECT” TAKES CENTER STAGE

A new study found a sharp decline in American IQ scores in recent years, offering support for what researchers term the “Reverse Flynn Effect.”Examining a large U.S. sample, researchers from Northwestern University found that IQ ability scores in three of four key categories dropped between 2006 and 2018. Composite ability scores (single scores derived from multiple pieces of information) were also lower in recent samples.

While a decline in IQ scores may sound alarming, researchers caution that the results do not mean Americans are becoming less intelligent. “It doesn’t mean their mental ability is lower or higher; it’s just a difference in scores that are favoring older or newer samples,” said Dr. Elizabeth Dworak, a research assistant professor of medical social sciences at Northwestern University Feinberg School of Medicine and lead author of the new study. “It could just be that they’re getting worse at taking tests or specifically worse at taking these kinds of tests.” Additionally, researchers did find that American scores in the fourth key IQ category, spatial reasoning, had generally increased from 2011 to 2018.

Ultimately, results support a global decline in IQ scores beginning in the 1990s and 2000s. This phenomenon has become known as the “Reverse Flynn Effect.”

New Study Reveals Sharp Decline in American IQ Scores as the “Reverse Flynn Effect” Takes Center Stage - The Debrief

So, are we getting more stupid?

We Are All Getting Dumber, New Science Proves, and No One Is Sure Why | Inc.com

Why are Americans getting dumber? - UnHerd

And if so, why?

We seem to be getting stupider and population ageing may be why | New Scientist

Has relying on tech made us more stupid?

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