University of Kansas, Lawrence, KS, USA.
J Speech Lang Hear Res. 2012 Dec;55(6):1704-15. doi: 10.1044/1092-4388(2012/10-0106). Epub 2012 May 4.
The current study investigated finiteness marking (e.g., he walk s, he walk ed) in boys with fragile X syndrome (FXS); the boys were grouped based on receptive vocabulary (i.e., borderline, impaired).
Twenty-one boys with the full mutation of fragile X, between the ages of 8 and 16 years participated. The boys completed probes from the Test of Early Grammatical Impairment (TEGI; Rice & Wexler, 2001), a language sample, a nonverbal IQ test (Leiter-R; Roid & Miller, 1997), a receptive vocabulary test (the Pearson Picture Vocabulary Test-Fourth Edition [PPVT-IV]; Dunn & Dunn, 2007), and a measure of autistic symptoms (the Childhood Autism Rating Scale [CARS]; Schopler, Reichler, & Renner, 2002).
There were group differences for finiteness responses on the 3rd person singular probe; the group with impaired vocabulary omitted markers with greater frequency compared to the borderline vocabulary group. There were not significant differences on the past tense probe, with both groups performing lower than expectations based on receptive vocabulary ability. Nonverbal IQ was not correlated with the measures of finiteness marking.
Boys with FXS demonstrate delays in finiteness marking, in particular, on past tense verbs. Boys with FXS show a unique profile, unlike children with SLI, in which their use of tense markers may exceed expectations benchmarked to clause length.
本研究调查了脆性 X 综合征（FXS）男孩的限定标记（如 he walk s,he walk ed）；根据接受性词汇（即边缘型、受损型）对男孩进行分组。
21 名脆性 X 完全突变的男孩，年龄在 8 到 16 岁之间，参与了本研究。男孩们完成了早期语法障碍测试（TEGI；Rice 和 Wexler，2001）、语言样本、非言语智商测试（ Leiter-R；Roid 和 Miller，1997）、接受性词汇测试（Pearson 图片词汇测试第四版[PPVT-IV]；Dunn 和 Dunn，2007）和自闭症症状评估（儿童自闭症评定量表[CARS]；Schopler、Reichler 和 Renner，2002）。
在第三人称单数探针上，两组的限定反应存在差异；词汇受损组比词汇边缘组更频繁地省略标记。在过去时态探针上，两组的表现都低于基于接受性词汇能力的预期，没有显著差异。非言语智商与限定标记的测量结果没有相关性。
FXS 男孩在限定标记方面表现出延迟，特别是在过去时态动词上。FXS 男孩表现出一种独特的模式，与 SLI 儿童不同，他们的时态标记使用可能超过基于从句长度的预期基准。
