| Abstract: | Reports an error in the original article by K. Warner Schaie (Psychology & Aging, 1989Dec], Vol 44], 443–453). On page 449, some of the data in Table 8 were computed with an incorrect algorithm. The corrected table, which does not change the conclusions of the article, is included. (The following abstract of this article originally appeared in record 1990-09502-001.) Cross-sectional data on age differences in perceptual speed are presented from the Seattle Longitudinal Study for the age range 22–91 years (N?=?1,620, first assessed in 1977; N?=?628, first assessed in 1984). In addition, 838 subjects were followed over the 7-year interval. Markers of perceptual speed were the Identical Pictures and Finding A's tests from the Educational Testing Service's Kit of Factor-Referenced Cognitive Tests. Significant age differences, age changes, and cohort differences were found at both observed variable and latent construct levels. Cross-lagged correlations examine the role of perceptual speed in predicting later performance on other abilities (Verbal Meaning, Inductive Reasoning, Spatial Orientation, Number, and Word Fluency).… (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
