Multivariate modeling of age and retest in longitudinal studies of cognitive abilities

被引：62

作者：

Ferrer, E

Salthouse, TA

McArdle, JJ

Stewart, WF

Schwartz, BS

机构：

[1] Univ Calif Davis, Dept Psychol, Davis, CA 95616 USA

[2] Univ Virginia, Dept Psychol, Charlottesville, VA 22903 USA

[3] Johns Hopkins Univ, Dept Epidemiol, Bloomberg Sch Publ Hlth, Baltimore, MD 21218 USA

[4] Johns Hopkins Univ, Dept Environm Hlth Sci, Bloomberg Sch Publ Hlth, Baltimore, MD 21218 USA

来源：

PSYCHOLOGY AND AGING | 2005年 / 20卷 / 03期

关键词：

multivariate models of change; longitudinal methodology; multivariate latent growth curves; practice effects;

D O I：

10.1037/0882-7974.20.3.412

中图分类号：

R4 [临床医学]; R592 [老年病学];

学科分类号：

1002 ; 100203 ; 100602 ;

摘要：

Longitudinal multivariate mixed models were used to examine the correlates of change between memory and processing speed and the contribution of age and retest to such change correlates. Various age- and occasion-mixed models were fitted to 2 longitudinal data sets of adult individuals (N > 1,200). For both data sets, the results indicated that the correlation between the age slopes of memory and processing speed decreased when retest effects were included in the model. If retest effects existed in the data but were not modeled, the correlation between the age slopes was positively biased. The authors suggest that although the changes in memory and processing speed may be correlated over time, age alone does not capture such a covariation.

引用

页码：412 / 422

页数：11

共 46 条

[1] A latent growth curve analysis of late-life sensory and cognitive function over 8 years: Evidence for specific and common factors underlying change [J].