Stereotyping

What it is

Assuming that a person has characteristics because of the group they belong to, ignoring individual differences.

Example Expecting a stranger to be a poor driver because of their age or background.

Ad hominem fallacy
Ad hominem often leans on stereotypes about the speaker's group instead of the argument.
Hasty generalization fallacy
Stereotypes are hasty generalizations about groups.
Halo effect bias
Both let one characteristic stand for many others.
In-group bias bias
Stereotypes are applied most harshly to outsiders.
Representativeness heuristic bias
A stereotype is a representativeness judgment: a person resembles the group, so we assume the group's traits.
Fallacy of division fallacy
Division is the logic behind stereotypes: what is true of a group is assumed of each member.
Contagion bias bias
Both let a category's imagined qualities rub off on its members or objects.