Homosexuality and math

Are straight guys better at math than gay guys?  Are lesbians better than hetero females?  The Add Health Study asked teens what grade they earned in math last term. A's were assigned a 4, B's a 3, C's a 2, and D's or lower a 1.  Here are the means:

Mean math score (sample size = 5,863)

Straight males 2.60
Gay males 2.30*
Straight females 2.75
Lesbians  2.67

*significantly lower than straight guys

While lesbians basically earn the same average math grade as heterosexuals, gay guys don't perform as well.

Read your newspaper with a suspicious eye: Marginal Revolution shows three things about this week's MSM story that a recent major study proves that boys are not better at math than girls (and thus that Larry Summers was wrong): 1) the study actually shows greater variance in males (i.e., the means are the same, but more guys are really bad and really good) which goes a long way to explain why so many math experts are men; 2) that journalists don't get these kinds of stories right because they're stupid, gullible, and biased; and 3) that researchers facilitate the misinformation. (Call me cynical, but when I read in the newspaper that the two researchers quoted were women, I said, "Hmmm" to myself.)