The idea behind the concept of Electronic Wordof-Mouth (e-WOM) is important to the visibility of individuals and businesses on social media. Although the e-WOM is increasingly adopting in Vietnam, the association of e-WOM with social media among Vietnamese is an under-researched area.Accordingly, drawing on Social Cognitive Theory, this study aims to identify the role of e-WOM in developing e-loyalty and thus e-purchase. This study develops a model consisting of e-WOM as an independent variable, e-loyalty, and e-purchase as dependent variables, and information credibility, information quality and information usefulness as mediating variables. Analyzing the data obtained from 120 online brand members, this study shows that e-WOM has a significant positive impact on e-loyalty and e-purchase. Furthermore, information credibility, information quality, and information usefulness strengthened the relationship between e-WOM and e-loyalty.
Index Terms-e-loyalty, e-purchase, e-WOM, social media.Rajkishore Nayak is currently a senior lecturer at the Centre of Communication and Design, RMIT University, Vietnam. He completed his Ph.D from the School of Fashion and Textiles, RMIT University, Australia. He has around 15 years' experience in teaching and research related to fashion and textiles. He published about 90 peer-reviewed papers in national and international journals. Recently, Rajkishore was awarded with the "RMIT