In fractions of a second, people make judgments about whether someone is nice or mean, trustworthy of a crook, competent or inept. Although not everyone's instincts are exactly the same, there is such great overlap that researchers can create computer-generated images of what a nice, competent, or trustworthy person looks like. Using such images, scientists have now designed a software program that can "tell" whether a face appears mean or threatening, just like humans. The program was able to make judgments about celebrities' appearances much in line with popular perceptions of those celebrities.