Overgeneralized beliefs about a group of people that often underlie prejudicial emotions are called

The correct answer is : Stereotypes.

Explanation:

In social psychology, the concept of stereotype can be understood as a generalized view over a certain category of people. Individuals who stereotypically view others tend to have certain expectations about them, generally negative.

Stereotypes tend to be associated with another sociological concept called prejudice which is a preconceived opinion of others commonly regarded as negative.

For instance, the stereotype that blonde women are dumb, that all americans are fat and are pro-gun, etc.

In conclusion, the overgeneralized beliefs about a group of people that often underlie prejudicial emotions are called Stereotypes.