Which of the following is a non-discriminative clinical characteristic of AOS?

• A. Short periods of error-free speech.
• B. Prosody abnormalities.
• C. Consonants are distorted.
• D. Difficulty initiating speech.

Answer: (A)

In apraxia of speech, the signs you look for are tied to problems with planning and programming the movements used to speak. The statement that stands out as non-discriminative is brief stretches of fluent, error-free speech. While someone with AOS may sometimes produce utterances that sound fluent, this isn’t unique to AOS and can occur in other motor speech disorders or even in normal speech during easy or automatic tasks. Because it doesn’t help distinguish AOS from other conditions, it’s not a reliable diagnostic cue.

By contrast, distorted consonants and inconsistent speech errors reflect the core planning/programming difficulties of AOS, making them more characteristic. Difficulty initiating speech with a noticeable groping behavior also aligns with the motor planning challenges seen in AOS. Prosody abnormalities can be present in AOS but are not exclusive to it and thus contribute less decisively to a diagnosis.