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Explore diverse theories regarding the early stages of motor speech development and common predictions made by theories such as the universal theory and maturational theory. Delve into the stages of motor speech development from the earliest vocalizations to the period of the first 50 words, discussing production, perception, and self-organization. Sources consulted include Smith et al. (1995), Bohn & Polka (1995), and more.
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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)