Tuesday, March 18, 2008

More on speech and the IQ brain clock

Yet another research article [Peter & Stoel-Gammon (2008). Central timing deficits in subtypes of primary speech disorders. Clinical Linguistics & Phonetics, March 2008; 22(3): 171–198] indicating the importance of mental timing and speech (click here for prior related posts), in this case CAS (childhood apraxia of speech). According to the journal authors, this subtype of speech disorder is somewhat controversial in clinical practice. It is defined as "a motor speech disorder that specifically interferes with motor planning and/or programming, resulting in moderate to severe deficits in speech intelligibility."

The authors conclude that "this study is consistent with the presence of a central timing deficit in children with speechdisorders, expressed across modalities (oral, hand) and across types of timing measures (greater rhythmic structure, small-scale durational accuracy), affecting children with fewer
apraxic characteristics to a lesser extent."

Caveat....this is small sample size study (11 clinical subjects and 11 matched controls) that needs replication in additional samples.

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