Yes, it is ugly racism.

The URL is too long for the clicky-maker, but cut and paste it yourself for the data and analysis...


http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6WJB-51KK99S-2-1&_cdi=6874&_user=1911715&_pii=S0022103110002623&_origin=browse&_coverDate=03%2F31%2F2011&_sk=999529997&view=c&wchp=dGLbVtb-zSkzV&md5=48d6c074393233c5ef36448932e648c7&ie=/sdarticle.pdf