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