zondag 23 januari 2011

When global structure “Explains Away” local grammar: A Bayesian account of r...

 
 

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Publication year: 2011
Source: Cognition, In Press, Corrected Proof, Available online 22 January 2011
Colin, Dawson , LouAnn, Gerken
While many constraints on learning must be relatively experience-independent, past experience provides a rich source of guidance for subsequent learning. Discovering structure in some domain can inform a learner's future hypotheses about that domain. If a general property accounts for particular sub-patterns, a rational learner should not stipulate separate explanations for each detail without additional evidence, as the general structure has "explained away" the original evidence. In a grammar-learning experiment using tone sequences, manipulating learners' prior exposure to a tone environment affects their sensitivity to the grammar-defining feature, in this case consecutive repeated tones. Grammar-learning performance is worse if context...

 
 

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