We explore how to measure poverty over time, by focusing on trajectories of poverty rather than poverty at a particular point in time. We consider welfare outcomes over a period in time, consisting of a number of spells. We offer a characterization of desirable properties for measuring poverty...

Standard poverty analysis makes statements about deprivation after the veil of uncertainty has been lifted. Nonetheless, the term `vulnerability` has been used as a tool to remark that uncertainty and risk do matter. In this paper, we define `vulnerability to poverty` as the magnitude of the...