Emil O W Kirkegaard

Definitely mainstream. No one knows how to raise intelligence in a robust fashion. Most optimistic & still legit researcher is @JProtzko.

just keep practicing the tests ;)

Raise IQ != raise general intelligence.

then why do they use IQ tests centrally in their resesrch?

a) necessary condition for showing you raised intelligence b) they don't know or want to do the latent variable analysis

oh it's b) that got me - why do you psychologists always assume that you are speaking to another psychologyst

the statistical analyses to show increases in general intelligence instead of just IQ are complicated and require lots of subjects and tests

The easiest method that doesn't require a lot of fancy stats is examining far transfer gains. E.g. WM training -> vocab gains.