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| Research article summary (published 30 Jan 2009): |
Revisiting the metacontrast dissociation: comparing sensitivity across different measures and tasks.
Full Abstract
In the metacontrast dissociation procedure, presenting a masked shape prime prior to a visible shape target leads to reaction-time effects of the prime in an indirect measure, although participants cannot consciously detect prime shapes in a direct measure (Klotz & Neumann, 1999). This has been taken as evidence for the processing of unconscious input. The results of the present metacontrast dissociation study indicate that although participants are unable to consciously report the shape of the prime, they can consciously perceive motion between masked primes and visible targets in a hybrid direct/indirect measure (Experiments 1 and 3). This indicates that former tests did not provide an exhaustive measure for residual conscious perception of the prime in the metacontrast dissociation procedure. Further tests, however, reveal that residual motion perception cannot account for performance in the indirect measure (Experiments 2 and 3). Although the results thus leave the conception of processing of unconscious input intact, they may prompt a revision of its criteria.
Author information
Author/s: Ansorge, Ulrich (U); Becker, Stefanie I (SI); Breitmeyer, Bruno (B);
Affiliation: Institute of Cognitive Science, Institute of Psychology, University of Osnabrueck, Seminarstrasse 20, Osnabrueck, Germany. ulrich.ansorge(-atsign-)uni-osnabrueck.de
Journal and publication information
Publication Type: Journal Article; Research Support, Non-U.S. Gov't
Journal: Quarterly journal of experimental psychology (2006) (Q J Exp Psychol (Colchester)), published in England. (Language: eng)
Reference: 2009-Feb; vol 62 (issue 2) : pp 286-309
Dates: Created 2009/01/23; Completed 2009/04/08;
PMID: 18609370, status: MEDLINE (last retrieval date: 4/8/2009, IMS Date: 08 Apr 2009 00:00:00)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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