Glossary
Association Fallacy
What is the association fallacy?
An association fallacy occurs when a judgment about a person or claim rests on an irrelevant or insufficient association. In guilt by association, an argument is dismissed because of the people or group associated with its speaker, rather than because of a defect in the argument.
Guilt by association examples
Rejecting a proposal solely because an unpopular person also supports it is an example. The proposal still needs to be assessed on its merits. This differs from having relevant evidence that people coordinated an action or share a stated policy; an association is not automatically irrelevant.
At work, imagine rejecting an applicant solely because a former employer had a poor reputation, without evidence that the applicant was responsible for its conduct. The employer association has replaced an assessment of the individual.
How to assess an argument
Ask what the association actually establishes and whether the conclusion follows. Shared membership alone need not show agreement on every question. The question is whether the connection supports the conclusion. Calling something “guilt by association” is not enough either; explain which part of the reasoning fails.
The fallacy of composition concerns assuming that what is true of individual parts must be true of the whole.