학위논문 (석사) -- 서울대학교 대학원 : 경영대학 경영학과, 2020. 8. 김병도.The rise of the smartphone allows consumers to share their experience in anywhere and anytime with their smartphone. Under the new platform, eWOM created with mobile device thrives. Not only the difference between eWOM written with mobile device and nonmobile device, but also the role of visual information in the eWOM intrigued the authors interest. The paper tests three hypotheses with one field experiment and two lab experiments. Study 1 measures correlation between helpfulness of the reviews and the device type the reviews were written with. Using real-world data from TripAdvisor, the author proves that people find the review more helpful when it was written with mobile device than nonm...