The Effect of Social Media Influencers (SMIs) on Consumers’ Purchase Intention

  • Pei Xuan Lee
  • Jasmine A.L. Yeap
  • Say Keat Ooi Universiti Sains Malaysia
  • Chao Li


Social media has led to the emergence of Social Media Influencers (SMIs), a group of influential individuals who hold significant sway over consumer behaviours and play a crucial role in shaping their decision-making. Understanding how SMIs convey their messages to endorsed brands and influence positive behavioural intentions among consumers is essential. This study addresses this research gap by investigating the impact SMIs’ trustworthiness and para-social relationship on consumers’ purchase intentions, considering attributes such as expertise, physical attractiveness, authenticity, attitude homophily, and social attractiveness. Data was collected from social media users through self-administered online surveys, resulting in 179 valid responses, which were analysed using SPSS. The findings reveal that SMIs’ expertise, physical attractiveness, authenticity, and attitude homophily are critical factors in determining their trustworthiness. Additionally, attitude homophily and social attractiveness of SMIs are important predictors of para-social relationships. Furthermore, a strong para-social relationship between influencers and their followers positively influences consumers’ purchase intentions. This research contributes to the literature on SMIs by identifying the antecedents of SMIs’ trustworthiness and para-social relationships, and by examining their influence on followers’ purchase intentions.


Ahearne, M., Gruen, T. W., & Jarvis, C. B. (1999). If looks could sell: Moderation and mediation of the attractiveness effect on salesperson performance. International Journal of Research in Marketing, 16(4), 269-284.
AlFarraj, O., Alalwan, A. A., Obeidat, Z. M., Baabdullah, A., Aldmour, R., & Al-Haddad, S. (2021). Examining the impact of influencers’ credibility dimensions: attractiveness, trustworthiness and expertise on the purchase intention in the aesthetic dermatology industry. Review of International Business and Strategy, 31(3), 355-374.
Audrezet, A., de Kerviler, G., & Guidry Moulard, J. (2020). Authenticity under threat: When social media influencers need to go beyond self-presentation. Journal of Business Research, 117, 557-569.
Balabanis, G., & Chatzopoulou, E. (2019). Under the influence of a blogger: The role of information-seeking goals and issue involvement. Psychology & Marketing, 36(4), 342-353.
Chaker, N. N., Walker, D., Nowlin, E. L., & Anaza, N. A. (2019). When and how does sales manager physical attractiveness impact credibility: A test of two competing hypotheses. Journal of Business Research, 105, 98-108.
Chen, A., Lu, Y., & Wang, B. (2017). Customers’ purchase decision-making process in social commerce: A social learning perspective. International Journal of Information Management, 37(6), 627-638.
Cheung, C. M. K., Lee, M. K. O., & Rabjohn, N. (2008). The impact of electronic word‐of‐mouth. Internet Research, 18(3), 229-247.
Cheung, M. L., Pires, G. D., Rosenberger Iii, P. J., & De Oliveira, M. J. (2021). Driving COBRAs: the power of social media marketing. Marketing Intelligence & Planning, 39(3), 361-376.
Choi, H. C., Huang, S., Choi, H., & Chang, H. (2020). The effect of flight attendants' physical attractiveness on satisfaction, positive emotion, perceived value, and behavioral intention. Journal of Hospitality and Tourism Management, 44, 19-29.
Chu, S.-C., Deng, T., & Mundel, J. (2022). The impact of personalization on viral behavior intentions on TikTok: The role of perceived creativity, authenticity, and need for uniqueness. Journal of Marketing Communications, 1-20.
Chung, S., & Cho, H. (2017). Fostering Parasocial Relationships with Celebrities on Social Media: Implications for Celebrity Endorsement []. Psychology & Marketing, 34(4), 481-495.
Čivre, Ž., Knežević, M., Zabukovec Baruca, P., & Fabjan, D. (2013). Facial attractiveness and stereotypes of hotel guests: An experimental research. Tourism Management, 36, 57-65.
De Veirman, M., & Hudders, L. (2020). Disclosing sponsored Instagram posts: the role of material connection with the brand and message-sidedness when disclosing covert advertising. International Journal of Advertising, 39(1), 94-130.
Duffy, B. E., & Hund, E. (2015). “Having it All” on Social Media: Entrepreneurial Femininity and Self-Branding Among Fashion Bloggers. Social Media + Society, 1(2), 2056305115604337.
Dwivedi, Y. K., Kelly, G., Janssen, M., Rana, N. P., Slade, E. L., & Clement, M. (2018). Social Media: The Good, the Bad, and the Ugly. Information Systems Frontiers, 20(3), 419-423.
Farivar, S., Wang, F., & Yuan, Y. (2021). Opinion leadership vs. para-social relationship: Key factors in influencer marketing. Journal of Retailing and Consumer Services, 59, 102371.
Filieri, R., McLeay, F., Tsui, B., & Lin, Z. (2018). Consumer perceptions of information helpfulness and determinants of purchase intention in online consumer reviews of services. Information & Management, 55(8), 956-970.
Fisher, R. J., & Ma, Y. (2014). The Price of Being Beautiful: Negative Effects of Attractiveness on Empathy for Children in Need. Journal of Consumer Research, 41(2), 436-450.
Gomes, M. A., Marques, S., & Dias, Á. (2022). The impact of digital influencers’ characteristics on purchase intention of fashion products. Journal of Global Fashion Marketing, 13(3), 187-204.
Herbig, P., & Milewicz, J. (1995). To be or not to be...credible that is. Marketing Intelligence & Planning, 13(6), 24-33.
Hoffner, C. A., & Bond, B. J. (2022). Parasocial relationships, social media, & well-being. Current Opinion in Psychology, 45, 101306.
Hovland, C. I., & Weiss, W. (1951). The Influence of Source Credibility on Communication Effectiveness*. Public Opinion Quarterly, 15(4), 635-650.
Hughes, C., Swaminathan, V., & Brooks, G. (2019). Driving Brand Engagement Through Online Social Influencers: An Empirical Investigation of Sponsored Blogging Campaigns. Journal of Marketing, 83(5), 78-96.
Hwang, K., & Zhang, Q. (2018). Influence of parasocial relationship between digital celebrities and their followers on followers’ purchase and electronic word-of-mouth intentions, and persuasion knowledge. Computers in Human Behavior, 87, 155-173.
Jin, S. V., Muqaddam, A., & Ryu, E. (2019). Instafamous and social media influencer marketing. Marketing Intelligence & Planning, 37(5), 567-579.
Jin, S. V., & Ryu, E. (2020). “I'll buy what she's #wearing”: The roles of envy toward and parasocial interaction with influencers in Instagram celebrity-based brand endorsement and social commerce. Journal of Retailing and Consumer Services, 55, 102121.
Kamins, M. A., Brand, M. J., Hoeke, S. A., & Moe, J. C. (1989). Two-Sided versus One-Sided Celebrity Endorsements: The Impact on Advertising Effectiveness and Credibility. Journal of Advertising, 18(2), 4-10.
Khamis, S., Ang, L., & Welling, R. (2017). Self-branding, ‘micro-celebrity’ and the rise of Social Media Influencers. Celebrity Studies, 8(2), 191-208.
Ki, C.-W., Cuevas, L. M., Chong, S. M., & Lim, H. (2020). Influencer marketing: Social media influencers as human brands attaching to followers and yielding positive marketing results by fulfilling needs. Journal of Retailing and Consumer Services, 55, 102133.
Koay, K. Y., Cheung, M. L., Soh, P. C.-H., & Teoh, C. W. (2022). Social media influencer marketing: the moderating role of materialism. European Business Review, 34(2), 224-243.
Koay, K. Y., Ong, D. L. T., Khoo, K. L., & Yeoh, H. J. (2020). Perceived social media marketing activities and consumer-based brand equity. Asia Pacific Journal of Marketing and Logistics, 33(1), 53-72.
Ladhari, R., Massa, E., & Skandrani, H. (2020). YouTube vloggers’ popularity and influence: The roles of homophily, emotional attachment, and expertise. Journal of Retailing and Consumer Services, 54, 102027.
Lam, J. M. S., Ismail, H., & Lee, S. (2020). From desktop to destination: User-generated content platforms, co-created online experiences, destination image and satisfaction. Journal of Destination Marketing & Management, 18, 100490.
Langlois, J., Kalakanis, L., Rubenstein, A., Larson, A., Hallam, M., & Smoot, M. (2000). Maxims or Myths of Beauty? A Meta-Analytic and Theoretical Review. Psychological Bulletin, 126, 390-423.
Lee, J. A., & Eastin, M. S. (2021). Perceived authenticity of social media influencers: scale development and validation. Journal of Research in Interactive Marketing, 15(4), 822-841.
Lee, J. E., & Watkins, B. (2016). YouTube vloggers' influence on consumer luxury brand perceptions and intentions. Journal of Business Research, 69(12), 5753-5760.
Liu, Y., Luo, X., & Cao, Y. (2018). Investigating the influence of online interpersonal interaction on purchase intention based on stimulus-organism-reaction model. Human-centric Computing and Information Sciences, 8(1), 37.
Long, Z., & Wilhoit, E. D. (2018). Disciplined freedom, branded authenticity, and dependable independence: how tensions enact flexibility in lifestyle blogging careers. Journal of Applied Communication Research, 46(3), 368-387.
Lou, C., & Yuan, S. (2019). Influencer Marketing: How Message Value and Credibility Affect Consumer Trust of Branded Content on Social Media. Journal of Interactive Advertising, 19(1), 58-73.
Matthews, L., Eilert, M., Carlson, L., & Gentry, J. (2020). When and how frontline service employee authenticity influences purchase intentions. Journal of Business Research, 114, 111-123.
McCracken, G. (1989). Who is the Celebrity Endorser? Cultural Foundations of the Endorsement Process. Journal of Consumer Research, 16(3), 310-321.
Ohanian, R. (1990). Construction and Validation of a Scale to Measure Celebrity Endorsers' Perceived Expertise, Trustworthiness, and Attractiveness. Journal of Advertising, 19(3), 39-52.
Onu, C., Nwaulune, J., Adegbola, E., & Kelechi, N. G. (2019). The effect of celebrity physical attractiveness and trustworthiness on consumer purchase intentions: A study on Nigerian consumers. Management Science Letters, 9, 1965-1976.
Pezzuti, T., Pierce, M. E., & Leonhardt, J. M. (2018). Does language homophily affect migrant consumers’ service usage intentions? Journal of Services Marketing, 32(5), 581-591.
Phua, J., Jin, S. V., & Kim, J. (2017). Gratifications of using Facebook, Twitter, Instagram, or Snapchat to follow brands: The moderating effect of social comparison, trust, tie strength, and network homophily on brand identification, brand engagement, brand commitment, and membership intention. Telematics and Informatics, 34(1), 412-424.
Pick, M. (2021). Psychological ownership in social media influencer marketing. European Business Review, 33(1).
Reinikainen, H., Munnukka, J., Maity, D., & Luoma-aho, V. (2020). ‘You really are a great big sister’ – parasocial relationships, credibility, and the moderating role of audience comments in influencer marketing. Journal of Marketing Management, 36(3-4), 279-298.
Roy Dholakia, R., & Sternthal, B. (1977). Highly Credible Sources: Persuasive Facilitators or Persuasive Liabilities? Journal of Consumer Research, 3(4), 223-232.
Russell, C. A., & Rasolofoarison, D. (2017). Uncovering the power of natural endorsements: a comparison with celebrity-endorsed advertising and product placements. International Journal of Advertising, 36(5), 761-778.
Saima, & Khan, M. A. (2021). Effect of Social Media Influencer Marketing on Consumers’ Purchase Intention and the Mediating Role of Credibility. Journal of Promotion Management, 27(4), 503-523.
Schimmelpfennig, C., & Hunt, J. B. (2020). Fifty years of celebrity endorser research: Support for a comprehensive celebrity endorsement strategy framework. Psychology & Marketing, 37(3), 488-505.
Sekaran, U., & Bougie, R. (2003). Research Methods For Business, A Skill Building Approach, John Willey & Sons. Inc. New York.
Slepian, M. L., & Carr, E. W. (2019). Facial expressions of authenticity: Emotion variability increases judgments of trustworthiness and leadership. Cognition, 183, 82-98.
Sokolova, K., & Kefi, H. (2020). Instagram and YouTube bloggers promote it, why should I buy? How credibility and parasocial interaction influence purchase intentions. Journal of Retailing and Consumer Services, 53, 101742.
Song, H. G., Kim, Y.-S., & Hwang, E. (2023). How Attitude and Para-Social Interaction Influence Purchase Intentions of Mukbang Users: A Mixed-Method Study. Behavioral Sciences, 13(3), 214.
Thomas, T., & Johnson, J. (2017). The Impact of Celebrity Expertise on Advertising Effectiveness: The Mediating Role of Celebrity Brand Fit. Vision, 21(4), 367-374.
Torres, P., Augusto, M., & Matos, M. (2019). Antecedents and outcomes of digital influencer endorsement: An exploratory study. Psychology & Marketing, 36(12), 1267-1276.
Wan, L. C., & Wyer, R. S., Jr. (2015). Consumer Reactions to Attractive Service Providers: Approach or Avoid? Journal of Consumer Research, 42(4), 578-595.
Wang, S. W., & Scheinbaum, A. C. (2017). Enhancing Brand Credibility Via Celebrity Endorsement. Journal of Advertising Research, 58, 16 - 32.
Weismueller, J., Harrigan, P., Wang, S., & Soutar, G. N. (2020). Influencer Endorsements: How Advertising Disclosure and Source Credibility Affect Consumer Purchase Intention on Social Media. Australasian Marketing Journal, 28(4), 160-170.
Welbourne, D. J., & Grant, W. J. (2016). Science communication on YouTube: Factors that affect channel and video popularity. Public Understanding of Science, 25(6), 706-718.
Wiedmann, K.-P., & von Mettenheim, W. (2021). Attractiveness, trustworthiness and expertise – social influencers’ winning formula? Journal of Product & Brand Management, 30(5), 707-725.
Wu, I.-L., Chiu, M.-L., & Chen, K.-W. (2020). Defining the determinants of online impulse buying through a shopping process of integrating perceived risk, expectation-confirmation model, and flow theory issues. International Journal of Information Management, 52, 102099.
Zhou, S., Barnes, L., McCormick, H., & Blazquez Cano, M. (2021). Social media influencers’ narrative strategies to create eWOM: A theoretical contribution. International Journal of Information Management, 59, 102293.
How to Cite
LEE, Pei Xuan et al. The Effect of Social Media Influencers (SMIs) on Consumers’ Purchase Intention. International Journal of Business and Technology Management, [S.l.], v. 5, n. 3, p. 428-441, sep. 2023. ISSN 2682-7646. Available at: <>. Date accessed: 13 june 2024.