Effects of personalization and source expertise on users' health beliefs and usage intention toward health chatbots: Evidence from an online experiment.

Objective: Based on the heuristic-systematic model (HSM) and health belief model (HBM), this study aims to investigate how personalization and source expertise in responses from a health chatbot influence users' health belief-related factors (i.e. perceived benefits, self-efficacy and privacy concerns) as well as usage intention.