On: CAPTCHAs don’t prove you’re human – they prove you...

[andromeduck]

??? who assumes g can't change?

[sudosysgen → andromeduck]

It's generally accepted in psychometrics that general intelligence does not change in adulthood : https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3950413/

I personally think it's not something that's really true, but it's how I learned it in university and seems to be the default position of experts in the field.

This is of course assuming no traumatic brain injuries or the use of psychoactive substances.