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Early development of phonology. Diverse theories of infant speech production, i.e., e.g. : the universal theory (Jakobson 1941) the articulatory learning theory (cf. Ingram 1989) the maturational theory (Locke 1983) the refinement/attunement theory (Oller 1986)
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Diverse theories of infant speech production, i.e., e.g.: • the universal theory (Jakobson 1941) • the articulatory learning theory (cf. Ingram 1989) • the maturational theory (Locke 1983) • the refinement/attunement theory (Oller 1986) refer their diverse predictions to the commonly assumed stages of motor speech development.
Stages of motor speech development (cf. Smith et al. 1995) • the earliest vocalizations • reflexive (0-2 months) • control of phonation (2-4 months) • expansion/vocal play (5-6 months) • canonical babble (7-9 months) • variegated babble and first words (10-14 months) (the prelinguistic stage - up to the first word) • and the period of the first 50 words
Early development of phonology: production, perception and self-organization
The following sources were consulted when compiling the table: Smith et al. (1995), Bohn & Polka (1995), Clement & Koopmans-van Beinum (1995), Kuhl & Meltzoff (1995), Kuijpers (1995), Davis (1995), Studdert-Kennedy (1981), Kent (1992), Werker & Pegg (1992), Jusczyk (1992), Wode (1994)