Word of mouth and interpersonal communication: A review and directions for future research

People often share opinions and information with their social ties, and word of mouth has an important impact on consumer behavior. But what drives interpersonal communication and why do people talk about certain things rather than others? This article argues that word of mouth is goal driven and serves five key functions (i.e., impression management, emotion regulation, information acquisition, social bonding, and persuasion). Importantly, I suggest these motivations are predominantly self‐ (rather than other) serving and drive what people talk about even without their awareness. Further, these drivers make predictions about the types of news and information people are most likely to discuss. This article reviews the five proposed functions and well as how contextual factors (i.e., audience and communication channel) may moderate which functions play a larger role. Taken together, the paper provides insight into the psychological factors that shape word of mouth and outlines additional questions that deserve further study.