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Exemplar-based inference in multi-attribute decision making: contingent, not automatic, strategy shifts?
Umeå universitet, Samhällsvetenskapliga fakulteten, Institutionen för psykologi.
Department of Psychology, Uppsala University, Uppsala, Sweden.
Center for Adaptive Behavior and Cognition, Max Planck Institute for Human Development, Germany.
2008 (Engelska)Ingår i: Judgment and decision making, ISSN 1930-2975, E-ISSN 1930-2975, Vol. 3, nr 3, s. 244-260Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Several studies propose that exemplar retrieval contributes to multi-attribute decisions. The authors have proposed a process theory enabling a priori predictions of what cognitive representations people use as input to their judgment process (Sigma, for “summation”; P. Juslin, L. Karlsson, & H. Olsson, 2008). According to Sigma, exemplar retrieval is a back-up system when the task does not allow for additive and linear abstraction and integration of cue-criterion knowledge (e.g., when the task is non-additive). An important question is to what extent such shifts occur spontaneously as part of automatic procedures, such as error-minimization with the Delta rule, or if they are controlled strategy shifts contingent on the ability to identify a sufficiently successful judgment strategy. In this article data are reviewed thatdemonstrate a shift between exemplar memory and cue abstraction, as well as data where the expected shift does not occur. In contrast to a common assumption of previous models, these results suggest a controlled and contingent strategy shift.

Ort, förlag, år, upplaga, sidor
Cambridge University Press, 2008. Vol. 3, nr 3, s. 244-260
Nyckelord [en]
exemplar memory, cue abstraction, strategy shifts, multi-attribute decisions, Sigma
Nationell ämneskategori
Psykologi
Forskningsämne
psykologi
Identifikatorer
URN: urn:nbn:se:umu:diva-23012DOI: 10.1017/S1930297500002448OAI: oai:DiVA.org:umu-23012DiVA, id: diva2:219060
Projekt
ujl
Forskningsfinansiär
VetenskapsrådetTillgänglig från: 2009-05-26 Skapad: 2009-05-26 Senast uppdaterad: 2023-12-14Bibliografiskt granskad
Ingår i avhandling
1. A Division-of-Labor Hypothesis: Adaptations to Task Structure in Multiple-Cue Judgment
Öppna denna publikation i ny flik eller fönster >>A Division-of-Labor Hypothesis: Adaptations to Task Structure in Multiple-Cue Judgment
2007 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
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.

Ort, förlag, år, upplaga, sidor
Umeå: Psykologi, 2007. s. 76
Serie
Umeå studies in cognitive science, ISSN 1654-2568 ; 1654-2568 3
Nyckelord
multiple-cue judgment, exemplar models, cue abstraction, cue-combination rule
Nationell ämneskategori
Människa-datorinteraktion (interaktionsdesign)
Identifikatorer
urn:nbn:se:umu:diva-1327 (URN)978-91-7264-390-1 (ISBN)
Disputation
2007-09-21, Bt102, Beteendevetarhuset, 901 87, Umeå, 10:00 (Engelska)
Opponent
Handledare
Tillgänglig från: 2007-08-31 Skapad: 2007-08-31 Senast uppdaterad: 2018-01-13Bibliografiskt granskad

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