Representation Bias

Mistaking representatives of a certain subset of a category for representing the wider category as a whole. For example, a psychologist may not meet any mentally healthy individuals from a certain minority – yet believe that his experience of mental patients from that minority is an experience of how people from that minority group are in general. (In Swedish: representationsbias)

When applied to a category of human beings, this is a facet of categorism.

When Representation Bias occurs on the group level in a context of scientific research, it is known as Selection Bias.