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ERIC Number: EJ783133
Record Type: Journal
Publication Date: 2008-Jan
Pages: 6
Abstractor: Author
Reference Count: 0
ISSN: ISSN-0278-7393
The Intermixed-Blocked Effect in Human Perceptual Learning Is Not the Consequence of Trial Spacing
Mitchell, Chris; Nash, Scott; Hall, Geoffrey
Journal of Experimental Psychology: Learning, Memory, and Cognition, v34 n1 p237-242 Jan 2008
A robust finding in humans and animals is that intermixed exposure to 2 similar stimuli (AX/BX) results in better discriminability of those stimuli on test than does exposure to 2 equally similar stimuli in 2 separate blocks (CX_DX)--the intermixed-blocked effect. This intermixed-blocked effect may be an example of the superiority of spaced over massed practice; in the intermixed, but not the blocked exposure regime, each presentation of a given stimulus (e.g., AX) is separated from the next by the presentation of its partner (BX). Two experiments with human participants replicated the intermixed-blocked effect and showed that the effect was not due to the spacing of exposure trials. A mechanism for the intermixed-blocked effect is proposed, which combines theories from associative learning and memory.
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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