Lehman College and The Graduate Center, City University of New York, Bronx, NY, USA.
J Speech Lang Hear Res. 2009 Dec;52(6):1623-39. doi: 10.1044/1092-4388(2009/08-0063).
To test the hypotheses that adults who stutter will be slower in producing syntactically complex sentences than fluent adults and will benefit more from sentence-structure priming than will fluent adults.
Adults who stutter (n = 15) and fluent adults (n = 15) participated in 2 experiments. In Experiment 1, adults in both groups were administered a task that required memorization and production of sentences that varied in syntactic complexity. The same individuals who participated in Experiment 1 also participated in Experiment 2. The second experiment required all participants to create and produce sentences under primed and unprimed sentence-structure conditions.
Relative to adults who do not stutter, the speech initiation time of fluent utterances of adults who stutter became increasingly slower as syntactic complexity increased, and they exhibited greater facilitative effects of sentence-structure priming. In addition, adults who stutter showed a significant correlation between syntactic complexity and priming facilitation.
Data from these experiments confirmed both hypotheses and provided evidence that a subgroup of adults who stutter have grammatical encoding differences when compared with adults who do not stutter.
验证以下两个假设，即口吃成年人在生成句法复杂的句子时会比流利成年人慢，并且比流利成年人从句子结构启动中获益更多。
口吃成年人（n=15）和流利成年人（n=15）参与了 2 项实验。在实验 1 中，两组成年人都参加了一项需要记忆和生成句子的任务，句子的句法复杂度不同。参与实验 1 的相同个体也参加了实验 2。第二项实验要求所有参与者在启动和未启动句子结构的条件下生成和说出句子。
与不口吃的成年人相比，口吃成年人的流利言语起始时间随着句法复杂度的增加而逐渐变慢，并且他们表现出更大的句子结构启动促进作用。此外，口吃成年人的句法复杂度与启动促进之间存在显著相关性。
这些实验的数据证实了这两个假设，并提供了证据表明，与不口吃的成年人相比，口吃成年人在语法编码方面存在差异。
