Which description best fits a phoneme that persists beyond the median age of acquisition for that phoneme?

Which description best fits a phoneme that persists beyond the median age of acquisition for that phoneme?

• A. typical
• B. developmental
• C. nondevelopmental
• D. atypical

Answer: (C)

The key idea is timing in typical speech sound development. If a phoneme is expected to be acquired by a certain median age and a child still doesn’t produce it correctly after that point, the behavior is described as nondevelopmental. This term highlights that the sound is not following the typical developmental timeline, rather than labeling the pattern of error itself. So, persistence beyond the median age signals that the sound hasn’t developed as expected within the usual trajectory, hence nondevelopmental. For context, use typical development as a baseline: sounds that are acquired by their median age fit the “typical” category, while those still unresolved after that age fit nondevelopmental. It’s not simply about being late; it’s about not aligning with the normal developmental window.

The key idea is timing in typical speech sound development. If a phoneme is expected to be acquired by a certain median age and a child still doesn’t produce it correctly after that point, the behavior is described as nondevelopmental. This term highlights that the sound is not following the typical developmental timeline, rather than labeling the pattern of error itself. So, persistence beyond the median age signals that the sound hasn’t developed as expected within the usual trajectory, hence nondevelopmental.

For context, use typical development as a baseline: sounds that are acquired by their median age fit the “typical” category, while those still unresolved after that age fit nondevelopmental. It’s not simply about being late; it’s about not aligning with the normal developmental window.