This paper concerns which aspects of speech articulation belong to phonology and which aspects belong to phonetics. The authors deal primarily with physiological criteria, and consider examples of assimilation and its phonological or phonetic relevance. Co-articulation and reduction are also considered; they are viewed as factors responsible for…

While agreeing with psycholinguistic and neurolinguistic theories that suggest that innate language-related cognitive structures are the basis of language development, the author seeks to establish what it is that is innate and what is meant by innateness in the first place. The author considers the claims of psychological relevance made on behalf…