Question

what are ground on which people create sterotype concept?

Answer 1

Memes

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Answer 2

They suggest that stereotypes are the result of conflict, poor parenting, and inadequate mental and emotional development. Once stereotypes have formed, there are two main factors that explain their persistence.

In social psychology, a stereotype is an over-generalized belief about a particular category of people.[1] Stereotypes are generalized because one assumes that the stereotype is true for each individual person in the category.[2] While such generalizations may be useful when making quick decisions, they may be erroneous when applied to particular individuals.[3] Stereotypes encourage prejudice[3] and may arise for a number of reasons.