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Monitor on Psychology Volume 37, No. 10 November 2006 |
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A healthy mind, a longer life Can the right attitude and personality help you live longer? Psychologists are trying to find out. By Lea Winerman Thirty years ago, gerontologist Robert Atchley, PhD, contacted every resident over the age of 50 in the town of Oxford, Ohio. About two-thirds of themmore than 1,100 peopleagreed to participate in Atchleys Ohio Longitudinal Study of Aging and Retirement. The participants answered multitudes of survey questions about their physical and mental health, socioeconomic status, work life, family and other topics. Included in the questions were a few that measured the peoples attitudes toward their own agingthey were asked to agree or disagree with statements such as I am as happy now as I was when I was younger, and As you get older, you get less useful. Over the years, the participants returned several times to answer more questions, giving the researchers a detailed snapshot of the course of aging in late 20th-century America. In the late 1990s, Yale University psychologist Becca Levy, PhD, realized that the aging-attitudes questions from the Ohio study could help her answer a research question shed begun to consider: Could peoples attitudes toward aging influence how long they lived? Levy collected death records to find out whether each participant was still alive or the age at which they had died. When she matched up the records with the peoples survey answers, she found that people with more positive views of their own aging lived, on average, 7.6 years longer than people with more negative views. This significant survival advantage remained after controlling for other relevant factors. Levys study, published in 2002 in the Journal of Personality and Social Psychology (Vol. 83, No. 2, pages 261–270), is one of many over the past several years that have begun to suggest that your personality, attitude toward aging and other psychosocial variables might help either grant you extra years or shorten your life. Personality and attitude may also influence your physical and mental abilities as you age. If thats true, Levy says, the negative stereotypes of aging and the elderly that permeate our culture could have serious consequences that go beyond just making people feel bad. Negative images of aging could be a public health issue, she says. The stereotype threat Levy, a social psychologist, first became interested in aging because she studied stereotypes, and she was curious about how negative stereotypes of aging influenced the elderlys physical and mental health. She explains that members of racial or ethnic minorities encounter stereotypes while their identities are still forming, and they develop defenses early on. In contrast, people encounter aging stereotypes while they are still young, so because the stereotypes dont apply to them yet, they dont challenge them. As a result, once people are older, they may be more inclined to accept negative views of their age group unquestioningly. By the time they become old, theyve already internalized [the stereotypes], Levy says. In her earliest study on the topic, published in 1994 in the Journal of Personality and Social Psychology (Vol. 66, No. 6, pages 989–997), Levy found that elderly Chinese performed better on memory tasks than did elderly Americanspossibly, she hypothesized, because the Chinese tend to have more positive views of aging than Americans. Supporting this, she also found that older Americans who were deafanother group that, she says, tends to hold the elderly in higher esteem than mainstream American culturealso performed better than hearing Americans on memory tests. The Ohio longevity study followed up on this earlier work, and suggested that attitudes toward aging could affect not just discrete abilities like memory, but overall physical health. In her most recent study, published in March in the Journal of Gerontology: Psychological Sciences (Vol. 61, No. 2, pages 82–87), Levy looked at another hallmark of old agehearing loss. She found that seniors who held negative self-stereotypes about aging tended to lose more of their hearing over the course of three years than seniors with more positive views of aging. Levy says that she and her colleagues still dont know the exact mechanism by which positive attitudes translate into better memory, sharper hearing and a longer life. But, she says, it may have something to do with the will to livepeoples belief that the positive aspects of life outweigh the hardships. In the longevity study, for example, she found that the participants will to liveas measured by descriptions of their lives as either hopeful or hopeless, worthless or worthy and empty or fullcorrelated with both their perceptions of aging and their lifespan. Results like these show the power of negative aging stereotypes, according to University of Massachusetts Amherst psychologist Susan Krauss Whitbourne, PhD, who also studies aging and ageism. There are a lot of variations in how people look at their own aging process, she says. And in her research, she says, shes found that people who dont dwell on the negative changes that come with age generally seem to do best. But, she adds, its hard to avoid dwelling on those changes in a culture as saturated with ageism as ours. I hate the term senior momentI just hate it, she says. Because if you start to use terms like that about yourself, even if youre kidding, its going to have a negative impact on your self-esteem. A worriers advantage? Of course, taking a positive and optimistic attitude toward aging does not mean being unrealistic or ignoring serious age-related problems. Howard Friedman, PhD, a psychology professor at the University of California, Riverside, studies personality characteristics asso-ciated with longevity and health. Hes found that, contrary to popular belief, people who are extremely cheerful as children may actually die slightly younger than their less happy-go-lucky peers. In a series of studies begun in 1993, he retrieved the mortality data for a group of children first studied by psychologist Lewis Terman in 1922. He found that on average the most cheerful children died earlier, and that their earlier deaths may have been at least partially caused by a more careless attitude toward their healththey were somewhat more likely to drink, smoke and take other risks. Whats more, particularly conscientious children lived longer, healthier lives on average. This makes sense, Friedman says: A conscientious person will probably head to the doctor at the first sign of trouble, avoiding later, more serious problems. Still, he adds, the associations between personality and longevity are complicatedeven all of the mediating variables such as drinking, smoking and obesity didnt entirely explain the cheerfulness/early mortality link. And animal research has shown that individuals who are easily stressed may die earlier, due to the wear of frequently going through the startle response (see Socially isolated and sick). People try to generalize and say a trait like cheerfulness or neuroticism is good or bad, he says. But sometimes its good to worry, and sometimes its notit depends on the situation. Whitbourne agrees that when a positive attitude toward aging shades into a laissez-faire attitude toward health, it can go too far. You dont want to overdo it; if you go into denial thats bad, she says. Its good to have some anxiety about aging if it gets you moving and taking care of yourself, but its bad if you become incapacitated by it.
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