Objective: Correct speech sound production is essential for communication. Literature suggests a connection between speech sound errors and gross motor diffficulties. This capstone project reports the results of a single-subject experimental design compaing the effectiveness of completing speech treatment alone and speech treatrment with associated gross motor movements for individuals with speech sound disorders. Method: An alternating treatment design was used. Two participants aged six- to eight-years, eleven-month-old (both male), engaged in concurrent articulation therapy with cross-crawl gross motor movements for one treatmet sound and without cross crawl movements for another target sound. The investigator collected data on the articulation accuracy on a ten-word probe at the end of each session. Results: Both treatments demonstrated an increase in articulation accuracy. However, articulation therapy with cross crawl motor movements demonstrated a greater slope and relative level of change for both participants. Conclusion: Results revealed that combining cross crawl gross motor movements into articulation therapy does not interfere with progress. Combining cross crawl movements in articulation therapy provided a steeper slope, thus indicating a faster change in accuracy for both participants.
