Within-person structures of daily cognitive performance cannot be inferred from between-person structures of cognitive abilities

Published on Mar 11, 2019in PeerJ2.353
· DOI :10.7287/PEERJ.PREPRINTS.27576V1
Florian Schmiedek32
Estimated H-index: 32
(MPG: Max Planck Society),
Martin Lövdén43
Estimated H-index: 43
(KI: Karolinska Institutet)
+ 1 AuthorsUlman Lindenberger86
Estimated H-index: 86
(MPG: Max Planck Society)
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In the present study, we decomposed between- and within-person effects and examined moderators of the longitudinal physical activity-cognition association. Participants (N = 1722) were drawn from the Betula study and we included four waves of data across 15 years. Bayesian multilevel modeling showed that self-reported physical activity did not predict changes in cognitive function. Physical activity positively predicted cognitive performance at baseline, and the relations were stronger for more ...
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Differentiation of intelligence refers to changes in the structure of intelligence that depend on individuals' level of general cognitive ability (ability differentiation hypothesis) or age (developmental differentiation hypothesis). The present article aimed to investigate ability differentiation, developmental differentiation, and their interaction with nonlinear factor analytic models in 2 studies. Study 1 was comprised of a nationally representative sample of 7,127 U.S. students (49.4% femal...
#1Timo von Oertzen (MPG: Max Planck Society)H-Index: 18
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Properties of psychological variables at the mean or variance level can differ between persons and within persons across multiple time points. For example, cross-sectional findings between persons of different ages do not necessarily reflect the development of a single person over time. Recently, there has been an increased interest in the difference between covariance structures, expressed by covariance matrices, that evolve between persons and within a single person over multiple time points. ...
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