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This paper is a study that examines, based on conversational data, whether the logical development of Japanese people in expressing their opinions is really only "inductive" (i.e., the conclusion is stated after the conclusion). The author analyzed a corpus of natural conversations (transcribed data of spoken interviews) and found that both "deductive" patterns, in which the conclusion (central sentence) comes first (at the beginning) and "inductive" patterns, in which the conclusion comes last (at the end), exist at about the same level. The results showed that both "deductive" and "inductive" patterns existed to about the same extent.
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