Dual-goal facilitation in Wason's 2–4–6 task: what mediates successful rule discovery?

2.50
Hdl Handle:
http://hdl.handle.net/10545/324931
Title:
Dual-goal facilitation in Wason's 2–4–6 task: what mediates successful rule discovery?
Authors:
Gale, Maggie; Ball, Linden J.
Abstract:
The standard 2-4-6 task requires discovery of a single rule and produces success rates of about 20%, whereas the dual-goal (DG) version requests discovery of two complementary rules and elevates success to over 60%. The experiment examined two explanations of DG superiority: Evans' (1989) positivity-bias account, and Wharton, Cheng, and Wickens' (1993) goal-complementarity theory. Two DG conditions were employed that varied the linguistic labelling of rules (either positively labelled Dax vs. Med, or mixed-valence "fits" vs. "does not fit"). Solution-success results supported the goal-complementarity theory since facilitation arose in both DG conditions relative to single-goal tasks, irrespective of the linguistic labelling of hypotheses. DG instructions also altered quantitative and qualitative aspects of hypothesis-testing behaviour, and analyses revealed the novel result that the production of at least a single descending triple mediates between DG instructions and task success. We propose that the identification of an appropriate contrast class that delimits the scope of complementary rules may be facilitated through the generation of a descending instance. Overall, our findings can best be accommodated by Oaksford and Chater's (1994) iterative counterfactual model of hypotheses testing, which can readily subsume key elements of the goal-complementarity theory.
Affiliation:
University of Derby
Citation:
Dual-goal facilitation in Wason's 2–4–6 task: What mediates successful rule discovery? 2006, 59 (05):873 The Quarterly Journal of Experimental Psychology
Journal:
The Quarterly Journal of Experimental Psychology
Issue Date:
2006
URI:
http://hdl.handle.net/10545/324931
DOI:
10.1080/02724980543000051
Additional Links:
http://www.tandfonline.com/doi/abs/10.1080/02724980543000051
Type:
Article
Language:
en
ISSN:
1747-0218; 1747-0226
Appears in Collections:
Centre for Psychological Research

Full metadata record

DC FieldValue Language
dc.contributor.authorGale, Maggieen
dc.contributor.authorBall, Linden J.en
dc.date.accessioned2014-08-18T14:10:28Z-
dc.date.available2014-08-18T14:10:28Z-
dc.date.issued2006-
dc.identifier.citationDual-goal facilitation in Wason's 2–4–6 task: What mediates successful rule discovery? 2006, 59 (05):873 The Quarterly Journal of Experimental Psychologyen
dc.identifier.issn1747-0218-
dc.identifier.issn1747-0226-
dc.identifier.doi10.1080/02724980543000051-
dc.identifier.urihttp://hdl.handle.net/10545/324931-
dc.description.abstractThe standard 2-4-6 task requires discovery of a single rule and produces success rates of about 20%, whereas the dual-goal (DG) version requests discovery of two complementary rules and elevates success to over 60%. The experiment examined two explanations of DG superiority: Evans' (1989) positivity-bias account, and Wharton, Cheng, and Wickens' (1993) goal-complementarity theory. Two DG conditions were employed that varied the linguistic labelling of rules (either positively labelled Dax vs. Med, or mixed-valence "fits" vs. "does not fit"). Solution-success results supported the goal-complementarity theory since facilitation arose in both DG conditions relative to single-goal tasks, irrespective of the linguistic labelling of hypotheses. DG instructions also altered quantitative and qualitative aspects of hypothesis-testing behaviour, and analyses revealed the novel result that the production of at least a single descending triple mediates between DG instructions and task success. We propose that the identification of an appropriate contrast class that delimits the scope of complementary rules may be facilitated through the generation of a descending instance. Overall, our findings can best be accommodated by Oaksford and Chater's (1994) iterative counterfactual model of hypotheses testing, which can readily subsume key elements of the goal-complementarity theory.en
dc.language.isoenen
dc.relation.urlhttp://www.tandfonline.com/doi/abs/10.1080/02724980543000051en
dc.rightsArchived with thanks to The Quarterly Journal of Experimental Psychologyen_GB
dc.subjectRule discoveryen
dc.subjectContrast class cuesen
dc.titleDual-goal facilitation in Wason's 2–4–6 task: what mediates successful rule discovery?en
dc.typeArticleen
dc.contributor.departmentUniversity of Derbyen
dc.identifier.journalThe Quarterly Journal of Experimental Psychologyen
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