VA Salt Lake City Health Care System, UT, USA.
Am J Speech Lang Pathol. 2012 May;21(2):S5-27. doi: 10.1044/1058-0360(2011/11-0102). Epub 2012 Jan 9.
This investigation was designed to elucidate the effects of repeated practice treatment on sound production accuracy in individuals with apraxia of speech (AOS) and aphasia. A secondary purpose was to determine if the addition of rate/rhythm control to treatment provided further benefits beyond those achieved with repeated practice.
A single-subject design was employed with 10 speakers with chronic AOS and aphasia. Articulation accuracy served as the dependent measure. Participants received repeated practice treatment until a plateau in performance was observed or high levels of accuracy were achieved. If performance criterion was not reached, rate/rhythm control was added to the treatment to determine if additional gains would be made.
For 8 of the participants, improvements were evident for all applications of repeated practice treatment, and positive response generalization was observed in most cases. When rate/rhythm control treatment was applied, modest additional gains were apparent for the majority of the applications. The 2 participants who did not benefit from repeated practice treatment also did not show improvements with rate/rhythm control treatment.
Repeated practice treatment resulted in improved articulation for the majority of participants. The amount of improvement varied within and across participants. Rate/rhythm control appeared to have limited additional benefits for some participants.
本研究旨在阐明重复实践治疗对言语失用症（AOS）和失语症患者语音产生准确性的影响。次要目的是确定在治疗中加入速率/节奏控制是否除了通过重复实践获得的益处之外还提供了进一步的益处。
采用 10 名患有慢性 AOS 和失语症的患者的单被试设计。发音准确性作为因变量。参与者接受重复实践治疗，直到观察到表现的高原或达到高水平的准确性。如果未达到性能标准，则将速率/节奏控制添加到治疗中，以确定是否会获得额外收益。
对于 8 名参与者，所有重复实践治疗的应用都明显改善，并且在大多数情况下观察到积极的反应泛化。当应用速率/节奏控制治疗时，大多数应用中都出现了适度的额外收益。没有从重复实践治疗中受益的 2 名参与者也没有表现出对速率/节奏控制治疗的改善。
重复实践治疗使大多数参与者的发音得到改善。改善的程度在参与者内部和之间有所不同。对于一些参与者来说，速率/节奏控制似乎只有有限的额外益处。
