This stage generally refers to those over 60-80 years. During old age, people experience a conflict between integrity vs. despair. When reflecting on their life, they either feel a sense of accomplishment or failure. Physically, older people experience a decline in muscular strength, reaction time, stamina, hearing, distance perception, and the sense of smell. They also are more susceptible to severe diseases such as cancer and pneumonia due to a weakened immune system. Mental disintegration

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... also occur, leading to Dementia or Alzheimer's disease. However, partially due to a lifetime's accumulation of antibodies, the elderly are less likely to suffer from common diseases such as the cold. Whether or not intellectual powers increase or decrease with age remains controversial, longitudinal studies have suggested that intellect declines, while cross-sectional studies suggest that intellect is stable. It is generally believed that crystallized intelligence increases up to old age, while fluid intelligence decreases with age. For young people, time seems to have no end. But, as time passes we suddenly realize that the number of remaining years is limited. The realization that we are growing old can be traumatic. Our ideas about and attitudes toward aging are very important in how well we cope with and enjoy the passing years, Some psychological characteristics of aging get passed down from generation to generation through our genes. Others can result from real or perceived changes in our bodies as we age (e.g., mental or physical limitations). Social and cultural differences also affect how we deal with aging. Men and women think about aging differently, because of biological, social, and psychological differences between the sexes. For example, women tend to live longer than men, so they generally experience more losses of family members and friends. How Our Minds Change as We Age Losing mental function is perhaps the most feared aspect of aging. In fact, the fear itself often begins to wear down our quality of life. We begin to believe the stereotype that we are losing (or will lose) our mental function. This can lead to loss of self-esteem and withdrawal from others. However, mental function does not have to decrease with age. Our fears are usually groundless.