Brad Plumer has a grip,
A few comments. Obviously the "acting white" phenomenon only has a strong effect on achievement if the loss of friends is high enough to act as a deterrent on doing well in school. Intuitively, I'm not sure it does. A black student with a 4.0 has, on average, 1.5 fewer same-race friends than a similar white student. Friends are nice and all, but that's not a huge difference. It's also possible that the causal arrow is all wrong here. The "acting white" thesis suggests that smart black students get scorned by their peers, but it could simply be that black students who are unpopular for other reasons just end up spending more time in the library and hence, get higher grades.
but slips:
(That doesn't explain why smart black students are more unpopular than their white counterparts, though.)
Is "not as popular" the same thing as "unpopular"?
Half-Sigma is more than half right:
But I think that the really interesting finding, which was hardly discussed at all, is that at private schools the most popular white students have a GPA of 2.0, and as GPA increases above 2.0 popularity drops.
What s going on here? My take is that high GPA has a negative effect on popularity for students of all races at all schools. High grades are not valued at all in the school aged community. But there exists another factor, one which causes both higher GPAs and higher popularity. This other factor is the student s family's social and economic status (SES).
...because (keeping in mind we're commenting on a bogus issue) he gets another major point correct.
Going back to the issue of why blacks have a drop-off in same-race popularity when their GPA exceeds 3.5, it should be obvious that such high ability blacks have little in common with the other blacks in their school and more in common with the whites (who score a standard deviation higher in most measures of academic achievement), so they will have more white friends and less black friends. There is no evidence from the statistics in the paper that this has anything to do with being shunned for 'acting white.'
(Without going too deeply into the site, my observations
- there is no activity in any extant human society that is beyond the capabilities of a minimally configured human brain, and
- no one knows what those genetic factors are anyway
leads me to give less weight to genetic factors that influence intelligence than I believe Half-Sigma does.)