"This is so tasty, we'd like an extra helping!"

In the journal Intelligence, Peter Hartmann and colleagues analyzed two American data sets and and found that: 1) there is a 0.8 standard deviation difference (that means large) between whites (W) and Hispanics (H) in general intelligence (g); and 2) correlations between g loadings and H-W differences for each subtest demonstrate that much of the difference in IQ is due to differences in g. According to Arthur Jensen's default hypothesis, group differences are assumed to be caused by the same factors as within-group differences, and we know individual variation in g is at least 50 percent heritable. 

Bottom line: the white-Hispanic intelligence gap is 80 percent as wide as the black-white gap (which is huge), and like the black-white gap, it ain't goin' anywhere quick. 

I get misty-eyed at the wisdom of our leaders. Upon seeing all the 1960s poverty and social turmoil in the black ghetto, they said to themselves, "This is so tasty, we'd like an extra helping!"