Description: The general beliefs that we use to categorize people, objects, and events while assuming those beliefs are accurate generalizations of the whole group.
All X’s have the property Y (this being a characterization, not a fact).
Z is an X.
Therefore, Z has the property Y.
French people are great at kissing. Julie is French. Get me a date!
Explanation: “French people are great at kissing” is a stereotype, and believing this to be so is a fallacy. While it may be the case that some or even most are great at kissing, we cannot assume this without valid reasons.
Atheists are morally bankrupt.
Explanation: This isn’t an argument, but just an assertion, one not even based on any kind of facts. Stereotypes such as these usually arise from prejudice, ignorance, jealousy or even hatred.
Exception: Statistical data can reveal properties of a group that are more common than in other groups, which can affect probability of any individual member of the group having that property, but we can never assume that all members of the group have that property.
Tip: Remember that people are individuals above being members of groups or categories.