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Adaptive Changes between Cue-Abstraction and Exemplar Memory in a Multiple-Cue Judgment Task with Continuous Cues
Umeå University, Faculty of Social Sciences, Department of Psychology.
2007 (English)In: Psychonomic Bulletin and Review, Vol. 14, no 6, 1140-1146 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2007. Vol. 14, no 6, 1140-1146 p.
Identifiers
URN: urn:nbn:se:umu:diva-2499OAI: oai:DiVA.org:umu-2499DiVA: diva2:140656
Available from: 2007-08-31 Created: 2007-08-31 Last updated: 2010-10-07Bibliographically approved
In thesis
1. A Division-of-Labor Hypothesis: Adaptations to Task Structure in Multiple-Cue Judgment
Open this publication in new window or tab >>A Division-of-Labor Hypothesis: Adaptations to Task Structure in Multiple-Cue Judgment
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Judgments that demand consideration of pieces of information in the environment occur repeatedly throughout our lives. One professional example is that of a physician that considers multiple symptoms to make a judgment about a patient’s disease. The scientific study of such, so called, multiple-cue judgments that involve multiple pieces of information (cues: e.g., symptoms) and continuous criterion (e.g., blood pressure) has been concerned with the statistical modelling of judgment data (see Brehmer, 1994; Cooksey, 1996; Hammond & Stewart, 2001). In this thesis behavioural experiments, cognitive modelling and brain imaging is used to investigate an adaptive division of labor between multiple memory representations in multiple-cue judgment. It is hypothesized that the additive, independent linear effect of each cue can be explicitly abstracted and integrated by a serial, additive judgment process (Einhorn, Kleinmuntz, & Kleinmuntz, 1979). It is further hypothesized that a variety of sophisticated task properties, like non-additive cue combination, nonlinear relations, and inter-cue correlation, are carried implicitly by exemplar-memory (Medin & Schaffer, 1978; Nosofsky, 1984; Nosofsky & Johansen, 2000). Study I and II investigates the effect of additive versus non-additive cue-combination and verify the predicted shift in cognitive representations as a function of the underlying cue-combination rule. The third study is a review that discusses the nature of these representational shifts; are they contingent upon early perceived learning performance instead of automatic and error-driven? Study IV verifies that this shift is evident also in the neural activity associated with making judgments in additive and non-additive tasks.

Place, publisher, year, edition, pages
Umeå: Psykologi, 2007. 76 p.
Series
Umeå studies in cognitive science, ISSN 1654-2568 ; 1654-2568 3
Keyword
multiple-cue judgment, exemplar models, cue abstraction, cue-combination rule
National Category
Human Computer Interaction
Identifiers
urn:nbn:se:umu:diva-1327 (URN)978-91-7264-390-1 (ISBN)
Public defence
2007-09-21, Bt102, Beteendevetarhuset, 901 87, Umeå, 10:00 (English)
Opponent
Supervisors
Available from: 2007-08-31 Created: 2007-08-31 Last updated: 2009-11-06Bibliographically approved

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