[ebalit]

I find the guideline described in the article to be quite good. If the decision is important (as for hiring), you should get as much information as you can.

It would be interesting to know if people are good at guessing the uncertainty of a stereotype and if they approximate a Bayesian integration of information.

It is the case for visual, spacial and sensorimotor information. I wouldn't be surprised if it was also the case for social information.