Family aggregation of language impairment in an isolated Chilean population from Robinson Crusoe Island.

Family aggregation of language impairment in an isolated Chilean population from Robinson Crusoe Island.
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来自鲁滨逊漂流记岛的一个孤立的智利人群的语言障碍的家庭聚集。

DOI:
10.1111/1460-6984.12377
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发表时间:
2018
影响因子:
2.4
通讯作者:
De Barbieri Z
De Barbieri Z
中科院分区:
医学2区
文献类型:
--
作者:
De Barbieri Z

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据报道,智利鲁滨逊漂流记岛上的居民患特殊语言障碍(SLI)或发展性语言障碍(DLD)的频率增加。目的探讨该社区DLD的家族聚集性。我们评估了3 - 8岁殖民地儿童中DLD的发生率;11年(来自45个核心家庭的50个人)。通过评估先证的所有一级亲属(n= 107, 77对父母,25对兄弟姐妹,5对同父异母兄弟姐妹),计算语言障碍的家族聚集率。结果与结果我们发现71%的儿童在语音产生或表达和接受形态学方面的表现明显低于预期。这些儿童中的大多数表现出严重的表达和/或接受语言障碍。四分之一的语言障碍先证者主要有语音障碍。受影响先证者的家庭成员比那些正常发展的先证者经历了更高的语言障碍风险。无论非语言智商如何,这种增加的风险都是明显的。结论与意义本研究证实鲁滨逊岛上存在一种家族形式的言语和语言障碍。此外,我们发现无论非语言智商如何,熟悉度都是稳定的,这支持了最近降低非语言智商标准在DLD诊断中的重要性的运动。
BackgroundIt has been reported that the inhabitants of the Chilean Robinson Crusoe Island have an increased frequency of specific language impairment (SLI) or developmental language disorder (DLD).AimsTo explore the familial aggregation of DLD in this community.Methods & ProceduresWe assessed the frequency of DLD amongst colonial children between the ages of 3 and 8;11 years (50 individuals from 45 nuclear families). Familial aggregation rates of language disorder were calculated by assessing all available first‐degree relatives (n= 107, 77 parents, 25 siblings, five half‐siblings) of the probands.Outcomes & ResultsWe found that 71% of the child population performed significantly below expected in measures of phonological production or expressive and receptive morphology. The majority of these children presented with severe expressive and/or receptive language difficulties. One‐quarter of language‐disordered probands primarily had phonological difficulties. Family members of affected probands experienced a higher risk of language disorder than those of typically developing probands. This increased risk was apparent regardless of non‐verbal IQ.Conclusions & ImplicationsThe study substantiates the existence of a familial form of speech and language disorder on Robinson Crusoe Island. Furthermore, we find that the familiarity is stable regardless of non‐verbal IQ, supporting the recent movement to reduce the importance of non‐verbal IQ criterion in DLD diagnoses.
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