From the journal Intelligence via ScienceDirect, May - June 2023 Issue:
....1. Introduction
Labeled the Flynn effect (Herrnstein and Murray, 2010), intelligence quotient (IQ) scores substantially increased since 1932 and through the twentieth century, with differences ranging from 3.0 to 5.0 IQ points (0.20 to 0.33 SD) per decade (Flynn, 1984, Flynn, 1987, Flynn, 2007). These findings imply younger generations are expected to have higher IQ scores than the previous cohort. For example, if we tested a sample of Baby Boomers (born between 1946 and 1964) when they were 20 years old and compared their scores on the same test to a sample of Millennials (born between 1981 and 1996) tested at age 20, we would expect the latter group's IQ scores to be between 0.66 and 1.1 SD higher. This isn't to say that the sample of Millennials are smarter or more able than the group of Baby Boomers, but that a difference in scores exists favoring the younger generation. These results, however, should prompt other important questions – what demographic factors are contributing to the difference? Do these results generalize across adulthood? How long should the trend of increasing scores be expected to persist? Does this trend still exist in the United States?....
....HighlightsA reverse Flynn effect was found for composite ability scores with large US adult sample from 2006 to 2018 and 2011 to 2018.
Domain scores of matrix reasoning, letter and number series, verbal reasoning showed evidence of declining scores.
Three-dimensional rotation scores generally increased from 2011 to 2018.
Differences in ability scores were present regardless of age, education, or gender.
The steepest slopes occurred for ages 18–22 and lower levels of education.
Although it is possible I read more into the study than was actually there, the headline will remain until we see evidence of a resumption of the Flynn Effect.
Previously:
"Norwegians getting dumber" It's not just Norwegians, that's simply the group that was studied.
We've looked at this before.
Although six months old we're only getting to this because I just heard Professor Flynn was still alive.
(sorry Prof.)
From Norway Today, Dec. 28, 2017....
August 2014
Thanks, I think, to a reader.
"I would be
willing to wager that if an average citizen from Athens of 1000 BC were
to appear suddenly among us, he or she would be among the brightest and
most intellectually alive of our colleagues and companions. We would be
surprised by our time-visitor’s memory, broad range of ideas and
clear-sighted view of important issues. I would also guess that he or
she would be among the most emotionally stable of our friends and
colleagues."...
November 2012
"New findings suggest scientists not getting smarter"
