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Growing influencer credibility to drive endorsement effectiveness: a literature review

Author

Listed:
  • Chuong H.B. Nguyen
  • Joel Mero
  • Heikki Karjaluoto

Abstract

The accumulating body of research on influencer credibility that is emerging makes it relevant to reconcile the current findings in order to encourage further research. This article pursues three primary objectives: 1) it aims to define influencer credibility in the social media context; 2) it aims to develop a conceptual framework that integrates the antecedents and outcomes of influencer credibility; 3) it aims to uncover gaps in the literature and guide future research directions. Using 39 articles from 2016 to 2020, the results reveal that influencer credibility is driven by three groups of antecedents: 1) the characteristics, interactions, and relationships of influencers and audiences; 2) sponsorship disclosure; 3) the perceived fit of influencers with brands, audiences, and content. Influencer credibility is also a predictor of favourable attitudinal and behavioural outcomes, such as brand attitudes and purchase intentions. The review highlights managerial implications and issues deserving further research attention.

Suggested Citation

  • Chuong H.B. Nguyen & Joel Mero & Heikki Karjaluoto, 2025. "Growing influencer credibility to drive endorsement effectiveness: a literature review," International Journal of Internet Marketing and Advertising, Inderscience Enterprises Ltd, vol. 22(4), pages 408-440.
    • Handle: RePEc:ids:ijimad:v:22:y:2025:i:4:p:408-440
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