What is the expected pattern of error consistency in AOS across multiple attempts?

• A. Errors are highly consistent across attempts.
• B. Errors are completely random with no pattern.
• C. Errors are inconsistent and variable across attempts.
• D. There are no errors after therapy.

Answer: (C)

In apraxia of speech, errors are typically inconsistent across repeated attempts; the motor plan for speech movements is variable, so the same word or sequence can come out differently each time. This means you might hear one production that’s close to correct on one try and a distorted or substituted version on the next, with more variability on longer or more complex sequences. Therapy can improve overall accuracy, but it doesn’t usually eliminate all errors across every attempt. The other patterns—errors that stay the same every time, errors that are completely random with no pattern, or zero errors after therapy—don’t fit how AOS tends to present, where variability and instability in motor planning drive the errors. Therefore, the expected pattern is inconsistency and variability across attempts.