A stereotype is a simplifie and/or standardized conception or image with specific meaning, often held in common by people about another group. A stereotype can be a conventional and oversimplified conception, opinion, or image, based on the assumption that there are attributes that members of the other group hold in common. Stereotypes are sometimes formed by a previous illusory correlation, a false association between two variables that are loosely if at all correlated. Stereotypes may be positive or negative in tone. They are typically generalizations based on minimal or limited knowledge about a group to which the person doing the stereotyping does not belong. Persons may be grouped based on racial group, ethnicity, religion, sexual orientation, age or any number of other categories.