Hasty Generalization Fallacy. The hasty generalization fallacy is sometimes called the over-generalization fallacy. It is basically making a claim based on evidence that it just too small. Essentially, you can’t make a claim and say that something is true if you have only an example or two as evidence. Apr 10, 2013 · I own nothing That would be a good example of this fallacy. Jordan is a sample of one, then the (hasty) generalization is that players in general were better in the past. Apr 07, 2013 · Psychology Definition of OVERGENERALIZATION: noun. 1. a mental skewing wherein a person sees a sole occurrence as an invariable rule, so that, for instance, failure at attaining one job will predict a Hasty Generalization Examples . Hasty generalization is a type of logical fallacy. A fallacy is an argument that is based on mistaken reasoning. When one makes a hasty generalization, he applies a belief to a larger population than he should based on the information that he has. Overgeneralizing is a cognitive distortion that results in some pretty significant errors in thinking and has the potential to cause us a lot of unnecessary emotional pain. When we draw a faulty conclusion about something based on just one example, we are overgeneralizing. This can take many forms.