https://www.sciencedirect.com/science/article/pii/S0160289623000156?via%3Dihub

As I was expecting, tests have shown a significant decline in IQ scores in the US, measured from 2006 onward, most significantly, in 18-22 year olds…

I suspect this is primarily due to the prevalence of electronic technologies and their devastating effects on memory, creativity and sense of well-being or relation in all cohorts…

https://www.sciencedirect.com/science/article/pii/S0160289623000156?via%3Dihub