Phonological disorders in children: Underlying cognitive deficits

Abstract

Three subgroups of phonologically disordered children, those exhibiting predominantly delayed errors, consistently deviant errors and deviant inconsistent errors, were compared on a series of tasks. In one experiment, children's phonological errors when imitating, picture naming and describing absurd pictures were analysed. The results distinguished between the groups. In a second task, children's understanding of the phonological system was examined by asking them to indicate a preference between legal and illegal nonsense words. While the delayed and inconsistent children showed a preference for phonologically legal nonsense words, children with bizarre but consistent phonological processes did not. A third experiment investigated the three groups' perception of their own phonological forms as compared with their perception of the correct form of the same words. None of the children showed any difficulty in discriminating the correct forms, but all had considerable difficulty identifying their own tape‐recorded utterances. The results are discussed in terms of deficits that might underlie the three different types of developmental phonological disorder.

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