The cognitive processes underlying reading aloud are generally believed to involve a dual-route print-to-sound mapping. To test this idea, a parallel activation model of reading aloud is being implemented and subjected to experiments. Spread of activation in the model is based on a theory that competition between cognitive processes for limited neurophysiological resources is a fundamental organizing principle of memory retrieval. This paper briefly describes the dual-route print-to-sound mapping, introduces the competition-based theory being tested, and explains our work's relationship to modelling acquired dyslexia.
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