Purpose: Live commerce, particularly on social platforms like Douyin, has become a dominant marketing channel. However, the mechanisms driving consumer purchase intention in this dynamic environment require deeper understanding. This study aims to inv...
Purpose: Live commerce, particularly on social platforms like Douyin, has become a dominant marketing channel. However, the mechanisms driving consumer purchase intention in this dynamic environment require deeper understanding. This study aims to investigate the impact of influencer source credibility (attractiveness, expertise, and trustworthiness) on consumer purchase intention and, crucially, to examine the moderating role of influencer size (mega vs. micro) in this relationship.
Methodology: Drawing on the source credibility model, this research employed a quantitative, survey-based approach to collect data from users of the Douyin live commerce platform. The study analyzes the direct effects of the three credibility dimensions on purchase intention and the conditional effects based on influencer size.
Findings: The results reveal that all three dimensions of source credibility—attractiveness, expertise, and trustworthiness—exert a significant positive influence on purchase intention, with trustworthiness emerging as the most powerful predictor. A key finding is the significant moderating effect of influencer size on the relationship between trustworthiness and purchase intention; this effect is stronger for micro-influencers, who are often perceived as more authentic and relatable. Conversely, the moderating effects of influencer size on attractiveness and expertise were found to be insignificant, suggesting these attributes function as baseline expectations for influencers on entertainment-driven platforms.
Implications: This study validates the applicability of the source credibility model in the context of Chinese live commerce and enriches persuasion theory by identifying influencer size as a critical boundary condition. The findings indicate that trust is the central psychological mechanism driving conversions, and its impact is contingent on the perceived authenticity associated with different influencer tiers. Practically, the research advocates for a managerial shift from influencer reach to influencer credibility optimization. It suggests that brands should align their choice of mega- or micro-influencers with specific goals (e.g., brand awareness vs. sales conversion) and prioritize authenticity to navigate the competitive landscape of live commerce effectively.