> (surely it's logistically impractical to get any large number of busy faculty to spend time taking such tests) You can estimate it decently by looking at SAT

> (surely it's logistically impractical to get any large number of busy faculty to spend time taking such tests) You can estimate it decently by looking at SAT scores, which most professors will have taken at some point. Your error bars will be larger than if you administered IQ tests to everyone, but it's a lot easier.