Pizzioli Fabrizio, Schelstraete Marie-Anne
Unité Cognition et Développement, Université catholique de Louvain, Place Cardinal Mercier, 10, 1348 Louvain-la-neuve, Belgium.
J Speech Lang Hear Res. 2008 Jun;51(3):706-21. doi: 10.1044/1092-4388(2008/050).
The hypothesis that the linguistic deficit presented by children with specific language impairment (SLI) is caused by limited cognitive resources (e.g., S. Ellis Weismer & L. Hesketh, 1996) was tested against the hypothesis of a limitation in linguistic knowledge (e.g., M. L. Rice, K. Wexler, & P. Cleave, 1995).
The study examined the influence of the argument-structure complexity of a target sentence on the production of grammatical morphemes in French children with SLI compared with younger children matched for grammatical level in production (GL) and children of the same chronological age (CA). A sentence production task was used where the target sentences varied in terms of argument complexity and length.
The results indicated that children with SLI used articles and auxiliaries in obligatory contexts significantly less often than both the GL and CA control groups: More complex argument structures elicited the highest number of grammatical morpheme omissions; this effect was larger in children with SLI than in the GL group and was independent of the length of the sentences, which failed to show any influence on the production of grammatical morphemes.
These results support the hypothesis that grammatical-morpheme deficit in SLI depends at least in part on limited processing capacities.
针对特定语言障碍（SLI）儿童所表现出的语言缺陷是由有限的认知资源导致的这一假设（例如，S. 埃利斯·魏斯默尔和L. 赫斯基思，1996年），与语言知识受限的假设（例如，M. L. 赖斯、K. 韦克斯勒和P. 克莱夫，1995年）进行了对比测试。
该研究考察了目标句子的论元结构复杂性对患有SLI的法国儿童语法语素生成的影响，并与在语法生成水平（GL）上匹配的年幼儿童以及实际年龄（CA）相同的儿童进行了比较。使用了一个句子生成任务，其中目标句子在论元复杂性和长度方面有所不同。
结果表明，患有SLI的儿童在 obligatory 语境中使用冠词和助动词的频率明显低于GL和CA对照组：更复杂的论元结构引发的语法语素遗漏数量最多；这种影响在患有SLI的儿童中比在GL组中更大，并且与句子长度无关，句子长度对语法语素的生成没有任何影响。
这些结果支持了这样一种假设，即SLI中的语法语素缺陷至少部分取决于有限的处理能力。
