Detailed information regarding participant grouping, probe and treatment stimuli, severity criteria, and accuracy of production of target sounds (Wambaugh et al., 2017)

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) 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.

For more information on the methodology and results, please see the original article.

Supplemental Material S1. Participant identifiers used in previous studies.

Supplemental Material S2. Participant matching by group.

Supplemental Material S3. Probe and treatment stimuli for all participants.

Supplemental Material S4. Criteria used to determine severity descriptors.

Supplemental Material S5. Accuracy of production of target sounds in experiment words for

various participants.

Wambaugh, J. L., Nessler, C., Wright, S., Mauszycki, S. C., DeLong, C., Berggren, K., & Bailey, D. J. (2017). Effects of blocked and random practice schedule on outcomes of sound production treatment for acquired apraxia of speech: Results of a group investigation. Journal of Speech, Language, and Hearing Research, 60(6S), 1739–1751.