A Question of Costliness: Time Horizons and Interstate Signaling

This article examines how interstate signaling processes operate under multiple dimensions of uncertainty. The existing signaling literature largely assumes that states communicate and infer one another’s intentions in a simplified context where they are only uncertain about one component of the other’s preferences. Relaxing this unrealistic assumption, I develop a model of interstate reassurance in which the receiver is uncertain of both the compatibility of the sender’s goals and its time horizons. If a receiving state is unsure of the sending state’s time horizons, it is more difficult to determine the costliness of a given signal, and thus how credible it is as an indicator of the sender’s preferences. I show that under certain conditions, shorter time horizons lead to more credible signaling as states become less willing to incur the short-term costs of misrepresentation. Under other conditions, however, shortened time horizons can incentivize hedging behavior, thus undermining a benign state’s ability to credibly signal its intentions. Finally, the model reveals that multidimensional uncertainty can actually facilitate cooperation across a wider range of conditions than one-dimensional uncertainty. I present two brief case illustrations and discuss the model’s implications for contemporary US–China relations.