Competitive Queuing and Spelling: Modelling Acquired Dysgraphia

The competitive queuing approach offers an explanation of serial order encoding in terms of ordering of activation values. This study assesses the ability of a competitive queuing model of spelling to reproduce a novel pattern of acquired dysgraphia which is characterised by reduced activation of lexical-orthographic representations. The model is able to account for some aspects of performance reasonably well. For instance, better spelling of letters at the beginning of the word results from their higher activation values. However, the model is shown to be inadequate in other respects. It is suggested that multiple occurrences of items in a sequence should not be represented by a single node which receives strong inhibition.

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