Practice increases the efficiency of evidence accumulation in perceptual choice | NOVA. The University of Newcastle's Digital Repository

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/24434

Title: Practice increases the efficiency of evidence accumulation in perceptual choice
Author/Creator: Brown, S.; Heathcote, A.
Description: Most models of choice response time base decisions on evidence accumulated over time. A fundamental distinction among these models concerns whether each piece of evidence is equally weighted (lossless accumulation) or unequally weighted (leaky accumulation). The authors tested a hypothesis derived from A. Heathcote and S. Brown's (2002) self-exciting expert competitor (SEEXC) model of skill acquisition: that evidence accumulation becomes less leaky with practice. The hypothesis was supported by observation that the effects of prime stimuli increased with practice. The authors used metacontrast masked primes, which could not be consciously discriminated by most participants, to avoid methodological problems associated with conscious strategy changes. The form of the law of practice in the data is also shown to be consistent with the SEEXC model.
Relation: Journal of Experimental Psychology-Human Perception and Performance Vol. 31, no. 2, p. 289-298
Date: 2005
Publisher: American Psychological Association
Keyword(s): sequential-sampling models; reaction-time; decision-making; response-time; metacontrast masking; expanded judgment; apparent; motion; discrimination; accuracy; speed
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.13/24434
Identifier: ISSN:0096-1523
Language: eng

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