著者

梅原 季哉

出版者

日本平和学会

雑誌

平和研究 (ISSN:24361054)

巻号頁・発行日

vol.60, pp.73-97, 2023-09-07 (Released:2023-09-13)

参考文献数

31

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This research essay, through text mining techniques, compares the extent of non-nuclear norms that appear either in the “Peace Declaration” by mayors of Hiroshima and Nagasaki, or in Japanese prime ministers' addresses at the peace ceremonies held each year on August 6th and 9th, as two variants of typical intersubjectively shared discourses to verify the extent of acceptance of non-nuclear norms in Japanese society. Using KH Coder, a free use text mining software for academic purposes, the study prepared and applied coding rules to those particular texts to extract notions from patterns of vocabulary and expression that suggest the existence of various non-nuclear norms including norms of nuclear non-use and those of nuclear nonproliferation. Then, it ran chi-square examinations to verify whether or not there exist statistically significant differences in the tendencies of norm-related narratives by the types of discourses. It is ascertained that, in the post-Cold War period, both references to nuclear weapons use (which suggest the existence of norms of nuclear non-use) and advocacy for banning nuclear weapons appear significantly more frequently in Peace Declarations than in PMs' addresses. Japanese prime ministers tend to make issues of nuclear weapons use and nuclear deterrence invisible to the public by not mentioning those issues in their speeches at the ceremonies held on the Hiroshima and Nagasaki anniversaries. Also, the research found that there exist only a few statistically significant differences in patterns of norm-related discourses among peace declarations and PM addresses in the post-Cold War period by themselves, regardless of the venue (Hiroshima or Nagasaki), the mayors' political affiliations, or particular prime minister' political standings (either from conservative LDP government or non-LDP government).