A primary care clinic is holding an educational seminar for medical students on pediatric development. During the session on expressive communication, the attending physician asks the students to outline the typical progression of a child's speech. Order the following expressive language achievements chronologically as they would normally emerge in a healthy infant and toddler, beginning with the earliest.
- 1Produces cooing (vowel) sounds
- 2Babbles using consonant-vowel combinations
- 3Uses 'mama' and 'dada' non-specifically
- 4Says at least one specific word other than 'mama' or 'dada'
- 5Combines words into two-word phrases
Answer
The correct chronological sequence is: cooing (2 months), babbling (6 months), non-specific 'mama/dada' (9 months), first specific word (12 months), and two-word phrases (24 months).
Expressive language development follows a predictable, structured progression. It begins with simple vowel sounds (cooing) at 2 months. As motor control improves, infants begin consonant-vowel combinations (babbling) at 6 months. By 9 months, they demonstrate non-specific imitation ('mama/dada'). The first meaningful, specific words emerge at 12 months, followed by an explosion in vocabulary that culminates in two-word combinations at 24 months. Recognizing this sequence is crucial for early identification of speech and language delays.
Step-by-Step Solution
Key Concept
Normal Expressive Language Development