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ERIC Number: EJ933808
Record Type: Journal
Publication Date: 2011-Mar
Pages: 16
Abstractor: As Provided
ISSN: ISSN-0278-7393
Increasing Capacity: Practice Effects in Absolute Identification
Dodds, Pennie; Donkin, Christopher; Brown, Scott D.; Heathcote, Andrew
Journal of Experimental Psychology: Learning, Memory, and Cognition, v37 n2 p477-492 Mar 2011
In most of the long history of the study of absolute identification--since Miller's (1956) seminal article--a severe limit on performance has been observed, and this limit has resisted improvement even by extensive practice. In a startling result, Rouder, Morey, Cowan, and Pfaltz (2004) found substantially improved performance with practice in the absolute identification of line lengths, albeit for only 3 participants and in a somewhat atypical paradigm. We investigated the limits of this effect and found that it also occurs in more typical paradigms, is not limited to a few virtuoso participants or due to relative judgment strategies, and generalizes to some (e.g., line inclination and tone frequency) but not other (e.g., tone loudness) dimensions. We also observed, apart from differences between dimensions, 2 unusual aspects of improvement with practice: (a) a positive correlation between initial performance and the effect of practice and (b) a large reduction in a characteristic trial-to-trial decision bias with practice. (Contains 12 figures, 4 tables and 2 footnotes.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A