Keiko Arai. "The American Girl Abroad: Nation and Gender in The Marble Faun". 『武蔵大学人文学会雑誌』. 2023. 55. 1. 165-186
Keiko Arai. "'I am mother's child': Nathaniel Hawthorne's Moderate Feminism in The Scarlet Letter". 武蔵大学人文学会雑誌. 2022. 53. 3・4. 207-230
Keiko Arai. "The 'vagueness of boundary': Democracy and American Girlhood in The Bostonians". 『武蔵大学人文学会雑誌』. 2021. 52. 3・4. 147-172
Keiko Arai. “‘To be herself, or a Gerty Farish’: The Powerful Presence of the Sisterhood Union in The House of Mirth”. 『武蔵大学人文学会雑誌』. 2018. 49. 2. 63-83
Keiko Arai. “Turn-of-the-Century Empire-Building and the Icon of the American Girl?--Edith Wharton's Critique of Americanness in The Age of Innocence--”. Nanzan Review of American Studies. 2011. 33. 239-250