Developmental origins of adult phonology: the interplay between phonetic emergents and the evolutionary adaptations of sound patterns.

In this paper fragments of a theory of emergent phonology are presented. Phonological patterns are seen as products of cultural evolution adapted to universal biological constraints on listening, speaking and learning. It is proposed that children develop adult phonology thanks to the interaction of the emergent patterning of phonetic content and the adaptive organization of sound structure. Emergence - here used in the technical sense of qualitatively new development - is illustrated with examples from the study of perception, motor mechanisms and memory encoding. In this framework, there is no split between 'behavioral phonetics' and 'abstract phonology'. Phonology differs qualitatively from phonetics in that it represents a new, more complex and higher level of organization of speech behavior. Accordingly, the phonology that the child ends up with as an adult is neither abstract nor independent of use. It represents an emergent patterning of phonetic content.