Time-accuracy functions for determining process and person differences : an application to cognitive aging

  • A paradigm for the determination of time-accuracy functions (TAFs) for individual participants is introduced for two pairs of tasks differing in cognitive complexity, that is, word scanning vs cued recognition and figural scanning vs figural reasoning. TAFs can be used to test dissociations of cognitive processes beyond scale-related ambiguities of ordinal interactions. The approach is applied to examine the cognitive-aging hypothesis that a single slowing factor can account for interactions between adult age and cognitive task complexity. Twenty young and 20 old adults participated in 17 sessions. Presentation times required for 75, 87.5, and 100% accuracies were determined for each task with a variant of the psychophysical method of limits. Accuracy was fit by negatively accelerated functions of presentation time. State-trace analyses showed that different slowing factors are required for high- and low-complexity tasks. Relations to speed-accuracy and performance-resource functions are discussed.

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Author:Reinhold Kliegl, Ulrich Mayr, Ralf Krampe
Series (Serial Number):Postprints der Universität Potsdam : Humanwissenschaftliche Reihe (paper 166)
Document Type:Postprint
Year of Completion:1994
Publishing Institution:Universität Potsdam
Release Date:2010/01/05
Source:Cognitive Psychology 26 (1994) 2, S. 134-164, ISSN 0010-0285, DOI 10.1006/cogp.1994.1005
Organizational units:Humanwissenschaftliche Fakultät / Institut für Psychologie
Dewey Decimal Classification:1 Philosophie und Psychologie / 15 Psychologie / 150 Psychologie
Licence (German):License LogoKeine Nutzungslizenz vergeben - es gilt das deutsche Urheberrecht
Notes extern:
The original publication is available at www.sciencedirect.com:
Cognitive Psychology - 26 (1994) Issue 2, p. 134-164
ISSN 0010-0285
DOI 10.1006/cogp.1994.1005