"Ageism is a form of prejudice directed toward older members of a society. Like other forms of negative group stereotyping, ageism can vary in both its intensity and its effect on the targeted group. People who possess unflattering dispositions toward the elderly may not cause them direct harm if their feelings are unexpressed. When these sentiments are more severe or very commonly held by dominant groups, however, they may take institutionalized forms as in the case of discriminatory labor practices." ("Ageism" by Christopher Donoghue, Encyclopedia of Social Problems, 2008).