Wambaugh Julie L, Nessler Christina, Wright Sandra, Mauszycki Shannon C, DeLong Catharine, Berggren Kiera, Bailey Dallin J
VA Salt Lake City Health Care System, UtahUniversity of Utah, Salt Lake City.
VA Salt Lake City Health Care System, Utah.
J Speech Lang Hear Res. 2017 Jun 22;60(6S):1739-1751. doi: 10.1044/2017_JSLHR-S-16-0249.
The purpose of this investigation was to compare the effects of schedule of practice (i.e., blocked vs. random) on outcomes of Sound Production Treatment (SPT; Wambaugh, Kalinyak-Fliszar, West, & Doyle, 1998) for speakers with chronic acquired apraxia of speech and aphasia.
A combination of group and single-case experimental designs was used. Twenty participants each received SPT administered with randomized stimuli presentation (SPT-R) and SPT applied with blocked stimuli presentation (SPT-B). Treatment effects were examined with respect to accuracy of articulation as measured in treated and untreated experimental words produced during probes.
All participants demonstrated improved articulation of treated items with both practice schedules. Effect sizes were calculated to estimate magnitude of change for treated and untreated items by treatment condition. No significant differences were found for SPT-R and SPT-B relative to effect size. Percent change over the highest baseline performance was also calculated to provide a clinically relevant indication of improvement. Change scores associated with SPT-R were significantly higher than those for SPT-B for treated items but not untreated items.
SPT can result in improved articulation regardless of schedule of practice. However, SPT-R may result in greater gains for treated items.
本研究旨在比较练习安排（即集中练习与随机练习）对患有慢性获得性言语失用症和失语症的患者进行语音产生治疗（SPT；Wambaugh、Kalinyak-Fliszar、West和Doyle，1998）的效果。
采用组间和单病例实验设计相结合的方法。20名参与者分别接受了随机刺激呈现的SPT（SPT-R）和集中刺激呈现的SPT（SPT-B）。通过在探测过程中产生的已治疗和未治疗实验单词中测量的发音准确性来检查治疗效果。
所有参与者在两种练习安排下，已治疗项目的发音均有改善。计算效应量以估计按治疗条件划分的已治疗和未治疗项目的变化幅度。在效应量方面，SPT-R和SPT-B没有显著差异。还计算了相对于最高基线表现的百分比变化，以提供临床上相关的改善指标。对于已治疗项目，与SPT-R相关的变化分数显著高于SPT-B，但未治疗项目并非如此。
无论练习安排如何，SPT都可导致发音改善。然而，SPT-R可能会使已治疗项目获得更大的进步。
