Date of Award

6-26-2026

Date Published

August 2026

Degree Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Political Science

Advisor(s)

Emily Thorson

Keywords

Political Behavior;Short Video;Social Media

Subject Categories

Political Science | Social and Behavioral Sciences

Abstract

Short video social media platforms (SVPs) such as TikTok and YouTube Shorts are distinguished from other forms of social media by two key features: video delivery and explicit algorithm-driven selection. In this project, I argue that these platform features make SVPs particularly potent at reinforcing individuals’ identities and enable more effective persuasion relative to other media. These media are sufficiently unique that to study their effects I develop novel survey items designed specifically around the key features of SVPs. These items assess both usage of SVPs and their impact on identity. I find that users of SVPs are particularly likely to engage the platforms for longer periods, compared to other social media. An observational study shows that the vast majority of SVP users view hyper-focused content and that those who engage the platform to connect with others have stronger identification with that content. I also find a positive association between the ability to name creators related to a content area and identification with that content area. Finally, an experiment finds that altering the expectations that individuals have about algorithms does not increase identification with others who watch the same content as them. However, using the platform to connect with others is also associated with increased identity with those who watch the same content. Throughout this project, I advance the literature by investigating the impacts of novel SVP features on user experience and identity, laying the groundwork for future research connection SVP features and attitude adoption.

Access

Open Access

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