Stage 3: Vocal play or expansion (3-8 months) corresponds to which option?

• A. Reflexive crying
• B. Cooing and laughter
• C. Basic canonical babbling
• D. Vocal play

Answer: (D)

Stage three, vocal play or expansion, is all about experimenting with sound. In this period, roughly from 3 to 8 months, babies explore the vocal tract, producing a wide variety of sounds, testing pitch, loudness, and timing, often mixing consonant-like and vowel-like sounds without forming real words. This playful vocal experimentation distinguishes it from reflexive crying, which is automatic and occurs earlier, and from the earlier stage of cooing and laughter, which centers on simpler, more vowel-like sounds. It also comes before canonical babbling, where babies start producing more structured syllables like repeated “ba” or “da.” So the option that names this exploratory vocal stage matches Stage 3.