LATELY — 18 July 2005

To Insure Promptness

Paper finds that white taxi pas­sen­gers tip more than black passengers. Gee, that’s interesting, I thought, I wonder how they’re con­trol­ling for income? … as it happens, they don’t (“What we at­tribute to pas­sen­ger race may be caused at least in part by a ten­dency of poorer people to tip less”) even though the median income of blacks in New Haven, Connecticut, is 65% of that of whites. (See also weak defense on page 33ff.)