Which disorder is a motor speech disorder distinct from language impairment and is primarily a planning and programming issue for speech movements?

• A. Apraxia of Speech
• B. Aphasia
• C. Dysarthria
• D. Cluttering

Answer: (A)

The main idea here is that apraxia of speech is a motor planning and programming problem for the movements of speech, separate from language abilities. In this condition, the brain has trouble sequencing and coordinating the articulators (tongue, lips, jaw) to produce the target sounds. That leads to variable, distorted, and effortful speech, with patterns like groping for the right sound and inconsistent errors, even though the person often understands language and knows what they want to say. Because the issue lies in planning and programming speech movements, language skills such as comprehension, vocabulary, and grammar are usually preserved, distinguishing it from a language disorder like aphasia.

Dysarthria, by contrast, stems from neuromuscular execution problems—weakness or incoordination of the speech muscles—so speech tends to be slurred or imprecise due to the muscles themselves, not the planning stage. Aphasia involves genuine language impairment, affecting understanding and/or production of language. Cluttering features rapid, sometimes irregular speech with disfluencies and may be unintelligible, but its core pattern isn’t a primary planning/programming deficit for speech movements.