Extending Our Understanding of eWOM Impact: The Role of Source Credibility and Message Relevance

Using qualitative data from consumers who have previously purchased online and who read online product reviews, this work expands current thinking on determinants of the impact of electronic word-of-mouth (eWOM) communications on consumer decision making. Specifically, beyond source credibility, findings suggest that consumers also assess how similar the source of eWOM is to them in terms of personality and product usage. In addition to source credibility, the notion of message relevance is introduced as the second first-order factor of eWOM impact. In turn, the underlying dimensions of source credibility (expertise and trustworthiness) and message relevance (persona similarity and usage similarity) constitute four second-order determinants of eWOM impact; providing a comprehensive view of the determinants of eWOM impact. Additionally, a conceptual framework depicting the sequential and cumulative effect of the four assessment dimensions along with possible gender differences in the processes used to assess eWOM credibility and message relevance are discussed.