Rate and rhythm procedures assume AOS primarily results from what type of errors?

• A. Timing errors
• B. Articulatory placement errors
• C. Laryngeal fatigue
• D. Semantic processing errors

Answer: (A)

Rate and rhythm approaches focus on the timing of speech motor movements. The idea is that apraxia of speech stems from difficulties in planning and sequencing the temporal aspects of how movements are produced. By providing an external pacing cue—like a metronome, tapping, or a pacing board—the speaker gains a stable temporal framework to organize articulatory movements, improving the timing of transitions between sounds and overall rhythm. This timing-based focus helps explain why these methods can improve fluency even when articulatory placement, vocal endurance, or language content aren’t the primary issues. So, the assumption is that the main errors are timing errors.