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.

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.

For a variety of reasons, there has been an explosion of interest in research on aging over the past few years. The reasons include an awareness that a large and growing proportion of our popUlation is over 65 and that research findings can contribute to their health, satisfaction, and efficiency as members of society; the fact that funding agencies have endorsed the need for more research effort in the area by setting up special programs; and also the fact that researchers themselves are turning more to practical problems as many theoretical issues (in experimen tal psychology at least) seem to remain as intractable as ever. Thus, at present there is widespread interest in aging, but there is also a lack of knowledge as to what has already been accomplished in the area, what the theoretical issues are, and what factors contribute to the methodological and practical difficulties. The time is propitious for meetings of experts in various aspects of the aging process, both to discuss among themselves latest advances in the field and also to inte grate known information for researchers and practitioners. In the summer of 1980 we organized such a meeting as the 10th annual psychology symposium to be held at the Erindale Campus of the University of Toronto. The topic chosen was Aging and Cognitive Processes, and the edited contributions to the symposium form the chapters of the present book.

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.

Presented in this volume is a discussion of current literature and theoretical issues relating to three aspects of late-life age-related cognitive change. Firstly, evidence regarding aging and the basic mental processes of attention, motor control, memory, language, problem-solving, and intelligence are presented. Secondly, the role of personal traits such as personality and self-efficacy in the aging of cognitive function are developed, along with self-awareness of cognitive processes and age changes in the monitoring of these processes. Thirdly, consideration is given to the study of interventions to delay or remediate the cognitive declines of aging.