Answer:
Stereotype
Step-by-step explanation:
In social psychology, a stereotype is an over-generalized belief about a particular category of people. It is an expectation that people might have about every person of a particular group. The type of expectation can vary; it can be, for example, an expectation about the group's personality, preferences, or ability. So Chuck's on his own believes Elle would do less likely in school, not just because she is beautiful. But because she is a beautiful blonde.