Which item is listed as a primary clinical characteristic of AOS?

• A. Prosody abnormalities.
• B. Short periods of error-free speech.
• C. Automatic speech better than propositional.
• D. Limb apraxia or nonverbal oral apraxia.

Answer: (A)

AOS is fundamentally about problems planning the timing and coordination of speech movements, not merely about muscle strength. When the motor plan for speech is faulty, the rhythm and melody of speaking—its prosody—become abnormal. You’ll notice slower, halting speech with lengthened sounds, frequent pauses, and irregular stress patterns across syllables and words. These prosodic disturbances are a common and distinguishing feature of AOS because they reflect the disrupted motor programming that underlies the disorder. While some individuals may have moments of more fluent speech or better automatic sequences, the abnormal prosody stands out as the primary clinical characteristic.