TY  - JOUR
PY  - 2006//
TI  - Short-term variability in cognitive performance and the calibration of longitudinal change
JO  - Journals of gerontology. Series B: psychological sciences and social sciences
A1  - Salthouse, T. A.
A1  - Nesselroade, John R.
A1  - Berish, Diane E.
SP  - 144
EP  - 151
VL  - 61
IS  - 3
N2  - 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>
LA  - en
SN  - 1079-5014
UR  - http://dx.doi.org/
ID  - ref1
ER  -