What behavior is commonly observed as a sign of motor planning difficulty in AOS during speech attempts?

• A. Fluent, unbroken speech
• B. Groping movements and inconsistent articulatory errors
• C. Complete absence of speech during tasks
• D. Isolated phoneme substitutions with consistent timing

Answer: (B)

Motor planning difficulty in AOS shows up as groping, trial-and-error movements of the lips, tongue, and jaw, with articulatory errors that vary from attempt to attempt. When someone tries to produce speech, their mouth searches for the right configuration, leading to hesitations, awkward movements, and irregular sound production rather than smooth, consistent speech. This variability in errors and the visible effort to guide the articulators are hallmark signs that the planning and sequencing of movements for speech are disrupted, rather than the motor execution of a single, fixed pattern.

Fluent, unbroken speech would suggest no planning breakdown for speech. A complete absence of speech is more characteristic of severe non-speech factors or other disorders. Isolated phoneme substitutions with consistent timing don’t fit the pattern of AOS, because the hallmark is inconsistent errors that change across attempts and visible groping rather than fixed, predictable substitutions.