Answer:
There is ample evidence to suggest that negative expectations and stereotypes about the competence of older adults pervade Western culture (e.g., Hummert, 1999; Kite and Wagner, 2002). For example, older adults are characterized as more forgetful and less able to learn new information (e.g., Hummert, Garstka, Shaner, and Strahm, 1994). In addition, young and old people alike believe that there is general memory decline across the latter half of the life span (Lineweaver and Hertzog, 1998; Ryan, 1992; Ryan and Kwong See, 1993). Research corroborates these views: there is abundant evidence that older adults do perform more poorly than younger adults across a wide variety of cognitive tasks (for a review, see Zacks, Hasher, and Li, 2000).
Yet there is also evidence of older adults serving important roles in society. For example, nearly 40 percent of the nation's 1,200 working federal judges have reached senior status and could retire. But, these senior judges are crucial to the justice system and, handling reduced caseloads, carry out nearly 20 percent of the federal judiciary's work (Markon, 2001). This fact is also consistent with the literature on cognitive aging, which shows that reasoning about complex matters relevant to daily life—what some call wisdom–shows no deterioration with age (Baltes and Kunzmann, 2003). Yet pervasive beliefs about age-related decline tend to outweigh beliefs about positive aging in our culture. Most people expect that losses will outnumber gains as they get older (Heckhausen, Dixon, and Baltes, 1989); most people expect their abilities to decline with age (Staudinger, Bluck, and Herzberg, 2003).