TY  - GEN
ID  - cogprints3119
UR  - http://cogprints.org/3119/
A1  - McDonald, Scott
A1  - Brew, Chris
TI  - A distributional model of semantic context effects in lexical processinga
Y1  - 2002///
N2  - One of the most robust findings of experimental psycholinguistics is that the context in which a word is presented influences the effort involved in processing that word. We present a novel model of contextual facilitation based on word co-occurrence prob ability distributions, and empirically validate the model through simulation of three representative types of context manipulation: single word priming, multiple-priming and contextual constraint. In our simulations the effects of semantic context are mod eled using general-purpose techniques and representations from multivariate statistics, augmented with simple assumptions reflecting the inherently incremental nature of speech understanding. The contribution of our study is to show that special-purpose m echanisms are not necessary in order to capture the general pattern of the experimental results, and that a range of semantic context effects can be subsumed under the same principled account.?o
AV  - public
KW  - lexical processing
KW  -  semantic priming
KW  -  word meaning
KW  -  distributional information
KW  -  Bayes' Law
ER  -

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