PhD Research Proposal Presentation: Heui Jae Choi
Heui Jae Choi, a doctoral student at Â鶹´«Ã½ÍøÕ¾ in the area of Information Systems will be presenting her research proposal entitled:
Three Essays on Information and Decision-Making in Digital Platforms
Tuesday, May 19, 2026, at 11:00 a.m.
Student Committee Chair: Professor Kunsoo Han and Professor Warut Khern-am-nuai
Please note that the presentation will be conducted in person. If you wish to participate, please reach out to the PhD office for the room number.
ABSTRACT
The rapid advancement of information technology (IT) has fundamentally transformed the information environment of digital platforms by enabling multiple actors, including users, firms, and regulators, to generate, shape, and impose information that influences individual decision-making. As platform information becomes increasingly diverse in source and modality, an important question for information systems research is how these different forms of information affect behavior across digital contexts.
This thesis investigates how information generated by users, facilitated by firms, and imposed by regulators influences behavioral outcomes on digital platforms. Essay 1 examines user-generated information in online reviews. It investigates how inconsistency across review cues, including star ratings, textual sentiment, and user-generated images, affects purchase behavior. Essay 2 focuses on firm-facilitated information in AI-driven recommendation systems and explores how human involvement shapes consumer purchase decisions, as well as the contextual and relational conditions under which such involvement becomes more or less effective. Essay 3 studies regulation-induced information on video-sharing platforms by examining how mandated identity disclosure influences audience engagement and how such disclosure may trigger perceived violations of the implicit psychological contracts between creators and audiences. Taken together, the three essays advance understanding of how information influences decision-making on digital platforms by highlighting the roles of cue inconsistency, multimodal information, human involvement, and regulatory disclosure.
