What's even more worrying is that I've heared plenty of people defend it as, "Younger generations are just intelligent in different ways compared to older generations."

I'm halfway through my 30's and this downturn started with my generation, halfway through the 80's. I hope I'm missing something, because I still need to see a benefit for lower attention spans, lower comprehensive reading skills and lower critical thinking capabilities.

IQ is calibrated so that the average IQ is 100. If the average IQ is going down, something has gone very wrong somewhere

i’m not doubting this, but do you know if there are any studies on this already?