Consider the phonological processes that you observe in this brief sample: "duck" → [dʌt], "tree" → [ti], "dress" → [dɛs], "can" → [tæn], "tank"→ [tæn], "coat" → [tot], "pat" → [pæt], "stop" → [tɑp], "go" → [do], "gate" → [det], "come" → [tʌm], "car" → [tɑo], "rabbit" → [wæbɪt], "lake" → [wet]. If the child who produced this sample were 4 years old how concerned would you be?

Consider the phonological processes that you observe in this brief sample: "duck" → [dʌt], "tree" → [ti], "dress" → [dɛs], "can" → [tæn], "tank"→ [tæn], "coat" → [tot], "pat" → [pæt], "stop" → [tɑp], "go" → [do], "gate" → [det], "come" → [tʌm], "car" → [tɑo], "rabbit" → [wæbɪt], "lake" → [wet]. If the child who produced this sample were 4 years old how concerned would you be?

• A. Not very concerned because phonological processes are common through age 5 years.
• B. Especially concerned because gliding is always an atypical process that occurs rarely in child speech.
• C. Very concerned because velar fronting and cluster reduction should be suppressed before age 4 years.
• D. Mildly concerned because these are common rather than atypical processes.

Answer: (C)

The key idea here is how typical phonological development progresses and what patterns should be resolved by a given age. By four years old, children usually produce velars like /k/ and /g/ in the back of the mouth rather than substituting them with alveolar stops, and they generally no longer simplify consonant clusters such as /st/ or /tr/. In this sample, velar fronting is evident across multiple words: /k/ and /g/ are consistently replaced by the alveolar stops /t/ and /d/ (for example, duck becomes [dʌt], go becomes [do], gate becomes [det], and so on). That pattern alone suggests the velars haven’t moved to their adult place of articulation by age 4. Consonant cluster reduction is also present, as seen when two sounds in a cluster are reduced to a single consonant (such as stopping /st/ to [t] in stop, or /tr/ to [t] in tree). By age 4, most children are expected to produce those clusters without simplifying them, so persistent reduction here is another red flag for delayed development of the phonological system. Gliding of liquids (l and r turning into w) can occur in younger kids and may linger for some, but the combination of ongoing velar fronting and cluster reduction is the more concerning pattern in terms of intelligibility and typical age norms. Therefore, this background would lead you to be very concerned about a possible speech sound development issue that might benefit from evaluation and targeted intervention.

The key idea here is how typical phonological development progresses and what patterns should be resolved by a given age. By four years old, children usually produce velars like /k/ and /g/ in the back of the mouth rather than substituting them with alveolar stops, and they generally no longer simplify consonant clusters such as /st/ or /tr/. In this sample, velar fronting is evident across multiple words: /k/ and /g/ are consistently replaced by the alveolar stops /t/ and /d/ (for example, duck becomes [dʌt], go becomes [do], gate becomes [det], and so on). That pattern alone suggests the velars haven’t moved to their adult place of articulation by age 4.

Consonant cluster reduction is also present, as seen when two sounds in a cluster are reduced to a single consonant (such as stopping /st/ to [t] in stop, or /tr/ to [t] in tree). By age 4, most children are expected to produce those clusters without simplifying them, so persistent reduction here is another red flag for delayed development of the phonological system.

Gliding of liquids (l and r turning into w) can occur in younger kids and may linger for some, but the combination of ongoing velar fronting and cluster reduction is the more concerning pattern in terms of intelligibility and typical age norms. Therefore, this background would lead you to be very concerned about a possible speech sound development issue that might benefit from evaluation and targeted intervention.