Description: "This chapter discusses the role of theory in practice. Leaning on Greenwald's (2012) assertion that a good theory is one that can guide successful practical application, the chapter reviews the theoretical mechanisms and practical application of inoculation theory. By examining its application in the many contexts in which inoculation can inform strategy, this chapter positions inoculation theory as an invaluable strategic tool that could be applied in any context in which social influence plays a prominent role. Exemplified suggestions on how to design an effective inoculation message precede the conclusion"--