Environmental Effects On Cognitive Abilities

It sometimes seems that it is difficult to pick up a current newspaper or a magazine without it containing a story about some behavioral characteristic for which it has been found that a gene is responsible. Even aspects of behavior that one would feel certain are environmentally controlled are now being attributed in part to the effects of the genes. But genes never act alone: Their effects are always filtered through the environment. The goal of this volume is to discuss how the environment influences the development and the maintenance of cognitive abilities. It is a successor to the editors' 1997 volume, Intelligence, Heredity, and Environment, and a companion to their new volume, Family Environment and Intellectual Functioning: A Life-Span Perspective. Taken together, the two-volume set comprises the most comprehensive existing work on the relation between the environment and cognitive abilities. Psychologists, parents, social workers, educators, and employers are all likely to find this book of interest.

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.

The United States is among the wealthiest nations in the world, but it is far from the healthiest. Although life expectancy and survival rates in the United States have improved dramatically over the past century, Americans live shorter lives and experience more injuries and illnesses than people in other high-income countries. The U.S. health disadvantage cannot be attributed solely to the adverse health status of racial or ethnic minorities or poor people: even highly advantaged Americans are in worse health than their counterparts in other, "peer" countries. In light of the new and growing evidence about the U.S. health disadvantage, the National Institutes of Health asked the National Research Council (NRC) and the Institute of Medicine (IOM) to convene a panel of experts to study the issue. The Panel on Understanding Cross-National Health Differences Among High-Income Countries examined whether the U.S. health disadvantage exists across the life span, considered potential explanations, and assessed the larger implications of the findings. U.S. Health in International Perspective presents detailed evidence on the issue, explores the possible explanations for the shorter and less healthy lives of Americans than those of people in comparable countries, and recommends actions by both government and nongovernment agencies and organizations to address the U.S. health disadvantage.

Possible new breakthroughs in understanding the aging mind that can be used to benefit older people are now emerging from research. This volume identifies the key scientific advances and the opportunities they bring. For example, science has learned that among older adults who do not suffer from Alzheimer’s disease or other dementias, cognitive decline may depend less on loss of brain cells than on changes in the health of neurons and neural networks. Research on the processes that maintain neural health shows promise of revealing new ways to promote cognitive functioning in older people. Research is also showing how cognitive functioning depends on the conjunction of biology and culture. The ways older people adapt to changes in their nervous systems, and perhaps the changes themselves, are shaped by past life experiences, present living situations, changing motives, cultural expectations, and emerging technology, as well as by their physical health status and sensory-motor capabilities. Improved understanding of how physical and contextual factors interact can help explain why some cognitive functions are impaired in aging while others are spared and why cognitive capability is impaired in some older adults and spared in others. On the basis of these exciting findings, the report makes specific recommends that the U.S. government support three major new initiatives as the next steps for research.

What is the impact of the family environment on us, particularly with regard to our intellectual functioning? Does the role of early family environment wear off, as some researchers have suggested, or does it maintain or possibly even become more important as we grow older? This book examines the interrelationship between family environment and intellectual functioning in a lifespan perspective. Covering a wide range of topics, it provides the most comprehensive and up-to-date examination of life-span family influences on various aspects of intellectual function. For cognitive, development/lifespan, and educational psychologists, and scholars studying the family and its influences, this volume will help: *students learn about family effects; *researchers update themselves in this active area of investigation; *therapists understand problems in intellectual functioning in their clients and in treating these clients successfully; and *educators gain a better grasp on how the students they teach are products not only of their genes and environments, in general, but of their family environments, in particular.

Cognitive Enhancement: Pharmacologic, Environmental and Genetic Factors addresses the gap that exists in research on the topic, gathering multidisciplinary knowledge and tools that help the reader understand the basics of cognitive enhancement. It also provides assistance in designing procedures and pharmacological approaches to further the use of novel cognitive enhancers, a field that offers potential benefit to a variety of populations, including those with neurologic and psychiatric disorders, mild aging-related cognitive impairment, and those who want to improve intellectual performance. The text builds on our knowledge of the molecular/cellular basis of cognitive function, offering the technological developments that may soon enhance cognition. Separate sections cover enhancement drugs, environmental conditions, and genetic factors in terms of both human and animal studies, including both healthy/young and aging/diseased individuals. Provides a multidisciplinary knowledge, enabling a further understanding of cognitive enhancement Offers coverage of the pharmacologic, environmental, and genetic factors relevant to the topic Discusses cognitive enhancement from the perspective of both healthy and diseased or aging populations Topics are discussed in terms of both human and animal studies

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.