The facts and fallacies of growing old are scrutinized in this AARP/University of Southern California study of how much adult Americans know - or think they know - about aging. While the people surveyed are moderately knowledgeable, the study found that many still have misconceptions about aging and older people. . . . For the 2004 survey, 1,202 telephone interviews were conducted with random samples of U.S. adults and an over-sampling of 314 African Americans and 318 Hispanics.