本論文では，計量的な手法を用いて川端康成の代筆問題と文体問題に取り組み，次に挙げたことを明らかにした。①小説『乙女の港』と『花日記』は川端康成と中里恒子の共同執筆である。②『コスモスの友』，『古都』，『眠れる美女』と『山の音』は代筆の可能性が低い。③泉鏡花，徳田秋聲と横光利一と比べ川端康成文体の存在が確認され，終戦の1945 年を境に川端康成の語彙の豊富さと，機能語の助詞，副詞，接続詞に変化が見られた。 / In this study, we revealed the following ghostwriting and writing style problem of Kawabata quantitatively. ①Otome no minato and Hana nikki were colloboratively written by Kawabata and Nakazato. ② Kosumosu no tomo, The Old Capital, House of the Sleeping Beauties, and The Sound of the Mountain were not written by the suspected ghostwriters. ③ Kawabata has his own writing style as compared to novels written by Izumi, Tokuda, and Yokomitsu. Changes were observed in vocabulary richness, postpositional particles, adverb, and conjunctions in Kawabata's novels after the second world war. / 博士(文化情報学) / Doctor of Culture and Information Science / 同志社大学 / Doshisha University

宇野浩二は精神病や挫折による執筆の空白期間を経るたびに異なる文体を編み出すと言われる作家である。本研究は、作品からデータを抽出し、計量的分析手法を用いて、宇野浩二の文体変化に関する諸問題を解明することを目的とする。文芸評論を踏まえ、病気後の文体変化、文体変化の時期、戦後の文体変化、同時代作家との比較の四つの問題を取り上げ、客観的なデータの分析結果に基づき、宇野浩二の文体特徴、文体変化の時期および戦後作品の独特性を明らかにした。 / Kouji Uno is a well-known Japanese littérateur, whose creative activity was interrupted twice because of a mental illness and frustrations. It was reported that his writing style had changed when he resumed writing. The study aims to investigated the differences of Kouji Uno's writing style in his different stages by using quantitative analysis. We demonstrated Uno's stylistic changes after the mental illness, the exact time of these changes, and the characteristics of works published after the War based on the literary criticism and statistical results. In addition, we clarified the uniqueness of his postwar works through a comparative analysis with contemporary writers. / 博士(文化情報学) / Doctor of Culture and Information Science / 同志社大学 / Doshisha University