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Investigating the effects of handedness on the consistency of lateralization for speech production and semantic processing tasks using functional transcranial Doppler sonography
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Testing the unitary theory of language lateralization using functional transcranial Doppler sonography in adults
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CATALISE : a multinational and multidisciplinary Delphi consensus study. Identifying language impairments in children
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CATALISE : a multinational and multidisciplinary Delphi consensus study. Identifying language impairments in children
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Increased prevalence of sex chromosome aneuploidies in specific language impairment and dyslexia
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CNTNAP2 variants affect early language development in the general population
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Overlaps between autism and language impairment: phenomimicry or shared etiology?
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Lower-frequency event-related desynchronization: a signature of late mismatch responses to sounds, which is reduced or absent in children with specific language impairment
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Genes, cognition, and communication: insights from neurodevelopmental disorders
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Weak hand preference in children with down syndrome is associated with language deficits
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Weak hand preference in children with Down syndrome is associated with language deficits
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Heritability of specific language impairment depends on diagnostic criteria
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Heritable risk factors associated with language impairments
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Abstract:
There is a strong genetic contribution to children’s language and literacy impairments. The aim of this study was to determine which aspects of the phenotype are familial by comparing 34 parents of probands with language/literacy impairments and 33 parents of typically developing probands. The parents responded to questionnaires regarding previous history for language/reading impairment and participated in psychometric testing. The psychometric test battery consisted of tests assessing non-verbal IQ, short-term memory, articulation, receptive grammar, reading abilities and spelling. Self-report measures demonstrated a higher prevalence of language and literacy impairments in parents of affected probands (32%) compared with parents of unaffected probands (6%). The two groups of parents differed significantly in their performance on the non-word repetition, oromotor and digit span tasks. Non-word repetition gave the best discrimination between the parent groups even when the data from the parents who actually were impaired as ascertained by direct testing or self-report were removed from the analyses. This suggests that non-word repetition serves as a marker of a family risk for language impairment. The paper concludes with a discussion of issues associated with ascertainment of specific language impairment (SLI).
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Keyword:
Original Articles
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URL: http://www.ncbi.nlm.nih.gov/pubmed/17233642 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1974814 https://doi.org/10.1111/j.1601-183X.2006.00232.x
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Is poor frequency modulation detection linked to literacy problems? A comparison of specific reading disability and mild to moderate sensorineural hearing loss
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Speech and non-speech processing in people with specific language impairment: a behavioural and electrophysiological study
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Frequency discrimination deficits in people with specific language impairment : reliability, validity, and linguistic correlates
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