> It is one the best predictors of job performance (up there with a work sample test), income, reaction time, how much schooling you'll get, how likely you are

> It is one the best predictors of job performance (up there with a work sample test), income, reaction time, how much schooling you'll get, how likely you are to commit crime, how long you'll live. Almost all of which can also be predicted pretty well using your zip code. Are you sure IQ is measuring something internal?