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Abstract:
An interactive activation and competition model related to
the Bruce and Young (1986) face-recognition model was used to model
priming effects in lexical decision. The model contains three pools
of units; the first consists of orthographic representations of
homographs (and other words); the second consists of
representations of meanings (two for homographs); the third
consists of semantic information (related words, in this case).
Connections within a pool are mutually inhibitory and connections
between pools are excitatory (or zero). The model is able to
simulate a number of findings. For example, it produces semantic
(related) priming that decays rapidly - after one intervening trial
semantic priming decays to zero. By reducing processing of the
prime (as might reasonably occur when the prime appears in a
sentence) the model produces long-lag priming for identical prime
sentences, but not for related-meaning or unrelated-meaning prime
sentences. The latter finding matches data from our
laboratory.
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