AGE CHANGES IN INTELLECTUAL ABILITIES IN THE ELDERLY

这项研究计划的目的是研究年龄和智力 在老年人中发挥作用。 提出了四项研究。 第一 包括收集455名老年人的第三波数据， 测试与广泛的电池（包含多个指标为10 1976/7年和1983/4年。纵向数据将用于 评估有关因素结构和水平变化的假设 是指跨越十四年的三次测量。 第二项和第三项研究利用了在两个国家收集的数据。 测量的场合。 研究2评估了终端的作用 下降455名参与者（在场合1和2进行测试）将 根据收集到的信息， 场合3.这些人的现有纵向数据（已 将被用来评估是否超过七个更大的下降 对于那些死去的人和那些幸存下来的人， 三个变量：词汇、算术和符号知觉速度。 研究3关注主观健康在智力变化中的作用。 在路径分析中将采用两种主观健康评级， 评估预测（结合其他变量，如性别和 教育）的变化，随着时间的推移，同样的三个 研究2中描述的变量。 第四项研究采用了收集的横截面和纵向数据 在以前的资助期间，作为情报和记忆的一部分， 项目 以前的工作与路径分析技术（适用于交叉 部分数据）显示了一个显着的关系， (one抑郁症方面）和图形感知速度。 这个项目 将分析其他年龄敏感的能力因素，在两个横截面 和纵向数据集，以评估这一发现的一般性。

The purpose of this research program is to study age and intellectual functioning in older adults. Four studies are proposed. The first involves gathering a third wave of data on a sample of 455 elderly who tested with an extensive battery (containing multiple indicators for ten factors) in 1976/7 and in 1983/4. The longitudinal data will be used to evaluate hypotheses concerning changes in structure and level of factor means across three occasions of measurement spanning fourteen years. The second and third studies take advantage of data gathered at two occasions of measurement. Study 2 evaluates the role of terminal decline. The 455 participants (tested at occasions 1 and 2) will be classified as living or deceased, based on information gathered at occasion 3. Existing longitudinal data for these individuals (already gathered) will be used to evaluate whether greater decline over seven years is found for those who are deceased versus those who survive for three variables: vocabulary, arithmetic and symbolic perceptual speed. Study 3 concerns the role of subjective health in intellectual change. Two ratings of subjective health will be employed in path analyses to evaluate prediction (in conjunction with other variables such as sex and education) of change in performance over time for the same three variables described in Study 2. The fourth study employs cross-sectional and longitudinal data gathered during previous funding periods as a part of the Intelligence and memory project. Previous work with path analysis techniques (applied to cross sectional data) has shown a significant relationship between Dyspgoria (one aspect of Depression) and Figural Perceptual Speed. This project will analyze other age sensitive ability factors in both cross-sectional and longitudinal data sets to evaluate the generality of this finding.