CBSU bibliography search
To request a reprint of a CBSU publication, please
click here to send us an email (reprints may not be available for all publications)
Frequency and consistency effects in a pure surface dyslexic patient.
Authors:
Patterson, K. & Behrmann, M.
Reference:
Journal of Experimental Psychology: Human Perception and Performance, 23, 1217-1231.
Year of publication:
1997
CBU number:
3554
Abstract:
We present data from a neurological patient with an acquired deficit for naming words with atypical spelling-sound correspondences. In Experiment 1, the degree of consistency within neighborhoods of orthographically similar words had a parallel impact on MP's pronunciations of regular and irregular words and nonwords. This result is more compatible with models in which the same basic procedure, sensitive in a graded fashion to both frequency and consistency, computes pronunciations for all types of letter strings than with models postulating separate lexical and non-lexical mechanisms. In Experiment 2, both correct and regularized pronunciations of exception words yielded RTs significantly modulated by word frequency, a finding not predicted by any current model. Neuropsychological observations provide an important additional source of evidence regarding models of cognitive function.