Which term is used to describe a phonological disorder classification indicating instability of errors across contexts?

• A. Inconsistent phonological disorder
• B. Consistent phonological disorder
• C. Articulation disorder
• D. Phonological delay

Answer: (A)

This topic asks you to recognize how phonological disorders can be described by how stable a child’s error patterns are across different speaking situations. The term in question captures the idea that a child’s misarticulations aren’t fixed: the same target sound can be produced differently in different words or contexts, even within the same session. In other words, the errors are inconsistent: you might hear one production in one context and a different one in another, or the same word can be produced correctly on some attempts and incorrectly on others.

This variability distinguishes this classification from other phonological or articulation issues. If errors were consistent across contexts, the clinician would describe a stable pattern, not an inconsistent one. An articulation disorder typically involves a relatively motor-based difficulty with a limited set of speech sounds and tends to be more stable. A phonological delay reflects a slower developmental trajectory of typical sound patterns rather than erratic variability. So, the best term for instability of errors across contexts is inconsistent phonological disorder.