As a funded research academic who's studied cognitive ability(ies) for 25+ years, there are too many wacky and mistaken statements in these comments. Intelligence (aka g or IQ) is one of the best researched constructs in social science. We know more about it than virtually any other concept in the people space. We know what it predicts, we know alot about group differences on the variable, and -- to the extent possible in any science -- we know that the group differences are real and not a result of systemic bias in the assessments. We know there's a strong genetic component and, of course, enriching experiences like education can increase it to some extent. We know it's relatively stable from 21 to 60 and, at the group level of analysis, it decreases as folks move from middle age to old age.
So, this is one of those areas I know way too much about and many of the comments seem wrong-headed. Makes me wonder how much faith I should put in comments on topics where I don't know as much.
So, this is one of those areas I know way too much about and many of the comments seem wrong-headed. Makes me wonder how much faith I should put in comments on topics where I don't know as much.