 One of the signal advantages of the Bayesian model of partial belief is that it is ready-made to plug into a prominent model of practical deliberation. Decision theory, or rational choice theory, is too large and sprawling a subject to be effectively covered here, although it will be presented in cursory outline. For an excellent introduction, see Thoma (2019) and the entry on  decision theory.  For our purposes, it is enough to note that a well-developed theory exists and that no comparable theory exists for alternative models of belief. However, recent work such as Lin (2013) and Spohn (2017a, 2019) may remedy that inadequacy in the case of qualitative belief.