単語アクセントの発話と知覚における個人差及び方言差の定量的研究

抄録

The kinds and number of word accent types of Japanese differ according to the dialect. Some dialects lack phonological distinction of word accent types. Systematization of accent types and distribution of dialectal accent areas have already been investigated by many scholars but quantitative studies concerning the accuracy of identification of accent types have rarely been tried before.
Using synthetic stimuli, the auther conducted some identification tests of word accent types on high school students in six cities, which covered four different dialectal accent areas. In addition, stability of dialectal accent types pronounced by many informants in Nagasaki was compared with that in Osaka, and the Nagasaki dialect was found more unstable in producing accent types than the Osaka dialect.
As the result of some perception experiments, individual differences were found both in the categorical boundary and in the identification accuracy. Dialectal difierences in boundaries were also found between certain accent types when one of the types was meaningless for certain dialectal subjects. The identification accuracy of subjects in Osaka, Tokyo, and Osaka had no significant difference, while it was significanly lower in Nagasaki where production of accent was unstable, and also in Fukui and Yonezawa whose dialects lack phonological distinction of accent types.
Accent perception was presumed to have some connection with accent production.