Testing the Replication and Extension of Why-Quit and How-To-Quit Antismoking Health Messages.

Research on health campaigns and interpersonal communication has seldom examined how campaign message exposure can influence the transmission of campaign-relevant information into interpersonal communication. Specifically, an individual exposed to a campaign message may send the message's core argument (replication) or other campaign-consistent information (extension) to additional campaign targets. Replication and extension may enhance campaign effects because they are expected to extend a campaign's reach and produce more campaign-consistent communication. Using a randomized controlled experiment, this study examined how exposure to why-quit and how-to-quit themed antismoking messages influences replication and extension. Study results showed that while both why-quit and how-to-quit messages were successful in increasing replication, only why-quit messages were successful in influencing extension. The study results demonstrate that there is variation in the degree of how messages can successfully be replicated or extended in interpersonal contexts, which can inform campaign development.