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Language in boys with fragile X syndrome

  • YONATA LEVY (a1), RIKI GOTTESMAN (a2), ZVI BOROCHOWITZ (a3), MOSHE FRYDMAN (a4) and MICHAL SAGI (a5)...

Abstract

The current paper reports of language production in 15 Hebrew-speaking boys, aged 9;0–13;0, with fully methylated, non-mosaic fragile X syndrome and no concomitant diagnosis of autism. Contrary to expectations, seven children were non-verbal. Language production in the verbal children was studied in free conversations and in context-bound speech. Despite extra caution in calculating MLU, participants' language level was not predicted by mean utterance length. Context bound speech resulted in grammatically more advanced performance than free conversation, and performance in both contexts differed in important ways from performance of typically developing MLU-matched controls. The relevance of MLU as a predictor of productive grammar in disordered populations is briefly discussed.

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Corresponding author

Psychology Department, The Hebrew University, Mount Scopus Jerusalem, Israel 91905. e-mail: msyonata@huji.ac.il

Footnotes

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This work was partially supported by grant 795/97 from the Israel Science Foundation to the first author and by a student's grant from the Levin Center in the Psychology Department, to the second author, who collected the data. We thank the Israeli Fragile X Association for help with the recruitment of subjects and the families and the children for collaborating with us.

Footnotes

Language in boys with fragile X syndrome

  • YONATA LEVY (a1), RIKI GOTTESMAN (a2), ZVI BOROCHOWITZ (a3), MOSHE FRYDMAN (a4) and MICHAL SAGI (a5)...

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