Models of quantitative estimations : Rule-based and exemplar-based processes compared

von Helversen, Bettina and Rieskamp, Joerg. (2009) Models of quantitative estimations : Rule-based and exemplar-based processes compared. Journal of experimental psychology. Learning, memory and cognition, Vol. 35, H. 4. pp. 867-889.

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Official URL: http://edoc.unibas.ch/dok/A6212328

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The cognitive processes underlying quantitative estimations vary. Past research has identified task-contingent changes between rule-based and exemplar-based processes (P. Juslin, L. Karlsson, & H. Olsson, 2008). B. von Helversen and J. Rieskamp (2008), however, proposed a simple rule-based model-the mapping model-that outperformed the exemplar model in a task thought to promote exemplar-based processing. This raised questions about the assumptions of rule-based versus exemplar-based models that underlie the notion of task contingency of cognitive processes. Rule-based models, such as the mapping model, assume the abstraction of explicit task knowledge. In contrast, exemplar models should profit if storage and activation of the exemplars is facilitated. Two studies tested the importance of the two models` assumptions. When knowledge about cues existed, the rule-based mapping model predicted quantitative estimations best. In contrast, when knowledge about the cues was difficult to gain, participants` estimations were best described by an exemplar model. The results emphasize the task contingency of cognitive processes.
Faculties and Departments:07 Faculty of Psychology > Departement Psychologie > Forschungsbereich Sozial-, Wirtschafts- und Entscheidungspsychologie > Economic Psychology (Rieskamp)
UniBasel Contributors:Rieskamp, Jörg
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Psychological Association
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:10 Oct 2014 09:19
Deposited On:10 Oct 2014 09:19

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