Short-term cognitive change in adults from 18 to 80

18 岁至 80 岁成年人的短期认知变化

• 批准号: 8466265
• 负责人: TIMOTHY SALTHOUSE
• 金额: $ 39.83万
• 依托单位: UNIVERSITY OF VIRGINIA
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-06-15 至 2015-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8466265
• 关键词: Accounting; Adult; Age; Age-Years; Age-associated memory impairment; Area; Characteristics; Cognitive; Data; Detection; Dimensions; Education; Elderly; Gender; Goals; Health; Impaired cognition; Individual; Individual Differences; Intervention; Lead; Life; Life Style; Measurement; Mental Depression; Modeling; Participant; Performance; Personality; Physical activity; Procedures; Qualifying; Reporting; Research; Research Design; Research Personnel; Sampling; Specific qualifier value; Structure; Testing; Time; age effect; age related; age related cognitive change; analytical method; cognitive change; cognitive function; design; effective intervention; experience; innovation; interest; longitudinal analysis; middle age; neglect; prevent; young adult

The proposed research will investigate short-term longitudinal change in a broad variety of cognitive variables, with particular emphasis on adults under the age of 60. Although previous studies have found little or no cognitive change in longitudinal comparisons involving young and middle-aged adults, this research will employ two methodological innovations, variable retest intervals and measurement bursts at each occasion, that will allow age effects to be distinguished from retest effects, and will increase sensitivity in the detection of change by taking into account normal short-term variability in performance. Among the primary questions to be investigated are whether age-related cognitive change begins early in adulthood, whether the changes in different cognitive variables are independent of one another and equally so at different periods in adulthood, and the degree to which factors such as one's cognitive or physical lifestyle moderate the amount of age change in different cognitive abilities at various periods in adulthood. Over 700 adults between 18 and 89 years of age who completed the same battery of 13 cognitive tests in 2001, 2002, and 2003 will be invited to participate in the project, as will two new samples of 300 adults each. Most of the participants will be assessed with a measurement burst design of three sessions within a period of about two weeks in either the first or second year of the project, and again in the either the third, fourth, or fifth year of the project. Mixed effects models will be used to obtain estimates of the age and retest components of change for each participant, and these estimates will be examined in terms of their correlations with one another, and with various individual difference characteristics.

拟议的研究将调查各种认知的短期纵向变化 变量，特别强调60岁以下的成年人。尽管以前的研究很少发现 或在涉及年轻和中年成年人的纵向比较中没有认知变化，这项研究 将采用两项方法论创新，可变的重测间隔和测量爆发 场合，这将使年龄效应与重新效果区分开，并会提高对 通过考虑正常的短期绩效可变性来检测变化。 在要研究的主要问题中，与年龄相关的认知变化是否早期开始 成年，不同的认知变量的变化是否彼此独立并同样 因此，在成年时期的不同时期，以及一个人的认知或身体等因素的程度 生活方式在成年时期各个时期的不同认知能力的年龄变化减少。 超过700名18至89岁之间的成年人完成了相同的13个认知测试的电池 2001、2002和2003将邀请参加该项目，每个300名成人的新样本也将被邀请参加该项目。 大多数参与者将在一段时间内通过三个会话进行测量爆发设计评估 在项目的第一年或第二年，大约两个星期，在第三，第四或 项目的第五年。混合效应模型将用于获得年龄和重新测试的估计值 每个参与者的变化组成部分，这些估计将根据其检查 相互关联，并与各种个体差异特征。