Multiple Pathways Of Cognitive Aging

"The empirical study of aging and cognition has progressed tremendously over the past 50-plus years. Much of the original research had its roots in the medical realm as investigators sought to characterize cognitive deficits associated with aging. For the most part, this research adhered to a biomedical model, in which aging was considered akin to a disease, and the focus was on understanding patterns of decline that were assumed to be an inevitable part of getting older (Hess & Blanchard-Fields, 1996). Indeed, aging was often studied by comparing patterns of decline to those associated with atypical populations with specific diseases or cortical lesions/insults (e.g., West, 1996). The study of aging and cognitive change made its way into mainstream experimental psychology in the 1960s and 1970s as researchers focused more on understanding normal aging through the lens of verbal learning and cognitive psychology (for reviews, see Kausler, 1982, 1991). One of the great advantages of these perspectives was the availability of sophisticated models to characterize memory and cognitive functions, and associated methods for assessing specific processes within these models. In these traditions, aging was usually studied by introducing a two-level age variable into traditional experimental designs that consisted of groups of young and older adults. The former groups typically comprised university undergraduates, whereas the latter groups usually encompassed a much wider age range of community-dwelling volunteers"--

In recent years the field of cognitive aging has flourished and expanded into many different disciplines. It is probably, therefore, inevitable that some of the research has become very narrow, primarily focused on "counting and classifying the wrinkles of aged behavior," rather than addressing more broad, general, and important questions. Timothy Salthouse's main goal in this book is to try to identify some of the major phenomena in the field of cognitive aging, and discuss issues relevant to the investigation and interpretation of them. He does not attempt to provide a comprehensive survey of the research literature on aging and cognition because many excellent reviews are available in edited handbooks. His principal aim is rather to stimulate readers to think about the big questions in cognitive aging research, and how they might best be answered.

For most Americans, staying "mentally sharp" as they age is a very high priority. Declines in memory and decision-making abilities may trigger fears of Alzheimer's disease or other neurodegenerative diseases. However, cognitive aging is a natural process that can have both positive and negative effects on cognitive function in older adults - effects that vary widely among individuals. At this point in time, when the older population is rapidly growing in the United States and across the globe, it is important to examine what is known about cognitive aging and to identify and promote actions that individuals, organizations, communities, and society can take to help older adults maintain and improve their cognitive health. Cognitive Aging assesses the public health dimensions of cognitive aging with an emphasis on definitions and terminology, epidemiology and surveillance, prevention and intervention, education of health professionals, and public awareness and education. This report makes specific recommendations for individuals to reduce the risks of cognitive decline with aging. Aging is inevitable, but there are actions that can be taken by individuals, families, communities, and society that may help to prevent or ameliorate the impact of aging on the brain, understand more about its impact, and help older adults live more fully and independent lives. Cognitive aging is not just an individual or a family or a health care system challenge. It is an issue that affects the fabric of society and requires actions by many and varied stakeholders. Cognitive Aging offers clear steps that individuals, families, communities, health care providers and systems, financial organizations, community groups, public health agencies, and others can take to promote cognitive health and to help older adults live fuller and more independent lives. Ultimately, this report calls for a societal commitment to cognitive aging as a public health issue that requires prompt action across many sectors.

Almost 25 years have passed since the Demography of Aging (1994) was published by the National Research Council. Future Directions for the Demography of Aging is, in many ways, the successor to that original volume. The Division of Behavioral and Social Research at the National Institute on Aging (NIA) asked the National Academies of Sciences, Engineering, and Medicine to produce an authoritative guide to new directions in demography of aging. The papers published in this report were originally presented and discussed at a public workshop held in Washington, D.C., August 17-18, 2017. The workshop discussion made evident that major new advances had been made in the last two decades, but also that new trends and research directions have emerged that call for innovative conceptual, design, and measurement approaches. The report reviews these recent trends and also discusses future directions for research on a range of topics that are central to current research in the demography of aging. Looking back over the past two decades of demography of aging research shows remarkable advances in our understanding of the health and well-being of the older population. Equally exciting is that this report sets the stage for the next two decades of innovative researchâ€"a period of rapid growth in the older American population.

By 2030 there will be about 70 million people in the United States who are older than 64. Approximately 26 percent of these will be racial and ethnic minorities. Overall, the older population will be more diverse and better educated than their earlier cohorts. The range of late-life outcomes is very dramatic with old age being a significantly different experience for financially secure and well-educated people than for poor and uneducated people. The early mission of behavioral science research focused on identifying problems of older adults, such as isolation, caregiving, and dementia. Today, the field of gerontology is more interdisciplinary. When I'm 64 examines how individual and social behavior play a role in understanding diverse outcomes in old age. It also explores the implications of an aging workforce on the economy. The book recommends that the National Institute on Aging focus its research support in social, personality, and life-span psychology in four areas: motivation and behavioral change; socioemotional influences on decision-making; the influence of social engagement on cognition; and the effects of stereotypes on self and others. When I'm 64 is a useful resource for policymakers, researchers and medical professionals.

Over a half-century of research has documented the fact that people of different ages perform at different levels on a variety of tests of cognitive functioning, and yet there are still no comprehensive theories to account for these phenomena. A Theory of Cognitive Aging is intended to begin intellectual discussion in this area by identifying major issues of controversy, and proposing a particular theoretical interpretation based on the notion that the rate of processing information slows down with increased age. Although still quite preliminary, the theoretical perspective is demonstrated to provide a plausible account for age-related differences in functioning on measures of memory, spatial ability and reasoning. The book has four aims: - To advocate a more explicitly theoretical approach to research in the area of cognitive aging. - To outline three important dimensions along which it is argued that any theory of cognitive aging phenomena must take a position. - To evaluate empirical evidence relevant to specific positions along those dimensions. - To summarize the major concepts of the current theory, and to describe its application to selected findings in the research literature.

Two noted researchers explain scientific evidence that shows why certain experiential and lifestyle factors may promote and maintain cognitive vitality in older adults. Although our physical abilities clearly decline as we age, cognitive decline in healthy old age is neither universal nor inevitable. In Nurturing the Older Brain, Pamela Greenwood and Raja Parasuraman show that scientific research does not support the popular notion of the inexorable and progressive effects of cognitive aging in all older adults. They report that many adults maintain a high level of cognitive function into old age and that certain experiential and lifestyle factors—including education, exercise, diet, and opportunities for new learning—contribute to the preservation of cognitive abilities. Many popular accounts draw similar conclusions and give similar lifestyle advice but lack supporting scientific evidence. Greenwood and Parasuraman offer a comprehensive review of research on cognitive and brain aging. They show that even the aged brain remains capable of plasticity—the ability to adapt to and benefit from experience—and they summarize evidence that brain plasticity is heightened by certain types of cognitive training, by aerobic exercise, and by certain diets. They also report on the somewhat controversial use of estrogen and cognition-enhancing drugs, on environmental adaptations (including "virtual assistants") that help older adults "age in place," and on genetic factors in cognitive aging. The past twenty years of research points to ways that older adults can lead rich and cognitively vital lives. As millions of baby boomers head toward old age, Greenwood and Parasuraman's accessible book could not be more timely.

As our society ages, the topic of cognitive aging is becoming increasingly important. This volume provides an accessible overview of how the cognitive system changes as a function of normal aging. Building on the successful first edition, this volume provide an even more comprehensive coverage of the major issues affecting memory, attention, language, speech and other aspects of cognitive functioning. The essential chapters from the first edition have been thoroughly revised and updated and new chapters have been introduced which draw in neuroscience studies and more applied topics. In addition, contributors were encouraged to ensure their chapters are accessible to students studying the topic for the first time. This therefore makes the volume appealing as a textbook on senior undergraduate and graduate courses.