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Abstract:
Abstract: The KE family has been reported as having an
inherited specific impairment in the processing of regular
grammatical endings, with no impairment in irregular grammatical
endings or in other aspects of speech and language. The overall
case of the family is discussed. Further linguistic and cognitive
tests have revealed a broader impairment including other aspects of
language, such as word repetition, and in addition a general
impairment of IQ in affected family members. Here the results of
some tests of nonverbal abilities are reported including test of
oral movements, of processing of pitch and timing, and of
linguistic prosody. The affected family members are compared to
age-matched controls and to subjects with left hemisphere damage
and subsequent acquired dysphasia, as well as their age-matched
controls and right hemisphere damaged subjects. They are found to
resemble left hemisphere dysphasic subjects in being impaired on
tests of oral movements and of imitation of spoken and tapped
rhythms. Linguistic prosody also displayed an unusual pattern, and
affected family members were found to be impaired on manipulation
of word order.
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