@article{ref1,
title="Short-term variability in cognitive performance and the calibration of longitudinal change",
journal="Journals of gerontology. Series B: psychological sciences and social sciences",
year="2006",
author="Salthouse, T. A. and Nesselroade, John R. and Berish, Diane E.",
volume="61",
number="3",
pages="144-151",
abstract="Recent studies have documented that normal adults exhibit considerable variability in cognitive performance from one occasion to another. We investigated this phenomenon in a study in which 143 adults ranging from 18 to 97 years of age performed different versions of 13 cognitive tests in three separate sessions. Substantial within-person variability was apparent across 13 different cognitive variables, and there were also large individual differences in the magnitude of within-person variability. Because people differ in the amount of short-term variability, we propose that this variability might provide a meaningful basis for calibrating change in longitudinal research. Correlations among the measures of within-person variability were very low, even after we adjusted for reliability, and there was little evidence that increased age was associated with a larger amount of within-person variability.<p /> <p>Language: en</p>",
language="en",
issn="1079-5014",
doi="",
url="http://dx.doi.org/"
}