If a person has AOS, they will have _____ errors in primary clinical characteristics.

• A. All
• B. Most
• C. Some
• D. None

Answer: (A)

Apraxia of Speech arises from a motor planning/programming deficit, so the errors you see in speech are typically inconsistent and vary from trial to trial. Because of this variability, you don’t expect every possible feature to show up in every person with AOS. Some errors will be present—such as inconsistent consonant and vowel substitutions, distorted productions, and longer, harder-to-coordinate sequences—while other features may be absent in a given individual. That makes “Some” the best choice: there will be errors, but not all primary clinical characteristics are necessarily present in every case. The other options overstate or understate what you’d expect: you do have observable errors, so “None” isn’t correct; it’s not accurate to claim that all features appear in every person, so “All” is too strong; and while multiple features can be seen, “Most” would imply a higher prevalence than typically required.