Are People Actually Getting Dumber? Introducing The Reverse Flynn Effect

Key Points:

• The Flynn Effect, observed throughout the 20th century, showed rising IQ scores across generations, attributed to factors like better nutrition, education, and more complex environments.
• Recent research by Elizabeth Dworak and colleagues analyzing cognitive test data from nearly 400,000 American adults between 2006 and 2018 reveals a reverse Flynn Effect, with overall declines in cognitive scores, particularly in abstract and logical reasoning.
• Declines were most pronounced among young adults aged 18 to 22 and those with lower education levels, while verbal reasoning remained relatively stable and spatial abilities, measured by three-dimensional rotation tasks, actually improved, possibly due to video game influence.
• The downward trend in cognitive performance predates the COVID-19 pandemic and the rise of artificial intelligence tools, with some experts suggesting increased smartphone use and a shift from print to digital media as potential contributing factors.
• The study highlights complex, domain-specific changes in intelligence rather than a uniform decline, and while the causes remain unclear, it suggests that evolving cultural and technological environments may be reshaping cognitive abilities in diverse ways.