“…This study is unique in that the estimated ages of older adults and typical grandparents, and the actual ages of college students' own grandparents, were used to examine whether possible differences in older adult categories' evaluations are more likely to be a function of age bias, social roles and stereotypes, or individual contact. If older adults, typical grandparents, and known (i.e., their own) grandparents are viewed as dissimilar in age, general findings by Anderson (1967) and Hummert (1990Hummert ( , 1993 suggest that the category of older adults with the oldest estimated, or actual, age would be ascribed the most negative characteristics. In contrast, if these categories of older adults are viewed as similar in age, differences in attitudes may be a result of stereotyping (Hummert, 1990) and social roles.…”