抄録
Word-tone dialects in Kyushu, where each lexical item in the speaker's mental lexicon has one of two tones, i.e., melodies, are found throughout western and southern Kyushu. Every lexical item is thought to be redundancy-free since the grammar is designed to minimize the amount of information that must be stored. Accordingly, each lexical item of Kyushu word-tone dialects must carry only one bit of tonal information. Predictable phonetic information is supplied by rules or constraints.
