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Research article summary:
The use of control groups in artificial grammar learning.
Abstract Extract:
Experimenters assume that participants of an experimental group have learned an artificial grammar if they classify test items with significantly higher accuracy than does a control group without training. The validity of such a comparison, however, ... (Full abstract text below) Published 2003Jan
in Journal: Q J Exp Psychol A
(Language : eng)
Full Pubmed Extract
This information was retrieved, real-time, on your behalf from the public area of the Pubmed website:
1. Q J Exp Psychol A.
2003 Jan;56(1):97-115
The use of control groups in artificial grammar learning.
Reber R, Perruchet P
Department of Psychology, University of Bern, Bern, Switzerland. rolf.reber@psy.unibe.ch
Experimenters assume that participants of an experimental group have learned an artificial grammar if they classify test items with significantly higher accuracy than does a control group without training. The validity of such a comparison, however, depends on an additivity assumption: Learning is superimposed on the action of non-specific variables-for example, repetitions of letters, which modulate the performance of the experimental group and the control group to the same extent. In two experiments we were able to show that this additivity assumption does not hold. Grammaticality classifications in control groups without training (Experiments 1 and 2) depended on non-specific features. There were no such biases in the experimental groups. Control groups with training on randomized strings (Experiment 2) showed fewer biases than did control groups without training. Furthermore, we reanalysed published research and demonstrated that earlier experiments using control groups without training had produced similar biases in control group performances, bolstering the finding that using control groups without training is methodologically unsound.
PMID : 12587897 [PubMed - Indexed for MEDLINE]
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Full Author Information
| First Name | LastName | Initials |
| Rolf | Reber | R |
| Pierre | Perruchet | P |
Affiliation: Department of Psychology, University of Bern, Bern, Switzerland. rolf.reber@psy.unibe.ch
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Category links from this article:- Adult
- Control Groups
- France
- Humans
- Language
- Learning - physiology
- Regression Analysis
- Students - psychology
- Teaching - statistics & numerical data
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