Gen Z is now officially the only generation to measure lower than their predecessors in intelligence. A neuroscientist says this is because short videos and summarised texts are being increasingly relied on, but this is not how the human brain works.
Fads? Science on intelligence is solid and progressing steadily. We now can point to specific neural processes that determine how well brain operates and explain differences in intelligence. Popular understanding of intelligence is still stuck on basic IQ tests used to compare completely different populations. At some point some feel-good concepts like EQ caught on and it was fashionable to dismiss IQ as ableism or something. You can still see a lot of it but I guess enough research on intelligence is done and some of it still leaks through to the public.