# Control email · Regions of China: stereotype tests

> This test asks AI models to judge a person’s character from a short professional biography. We added a place of origin, such as “A native of Henan province” or “Registered under a rural hukou,” to 2,000 short professional biographies and asked yes-or-no questions about the person. The rest of each biography stayed the same. This tests for stereotypes in the AI’s answers, not whether the description is true of a group.