. Chronic health conditions therefore increase in poor economic times. There is considerable spatial heterogeneity across local …

heterogeneity in revealed preferences.) Actual trade in the constructed economies using a tatonnement market institution closely …

this paper, we investigate the sensitivity of standard gravity estimation to spatial aggregation. We build a model in which … associated with smaller border effects. The reason is that due to spatial frictions, aggregation across space increases the … mechanism leads to border effect heterogeneity and is independent of multilateral resistance effects in general equilibrium …

)]. Increasing heterogeneity in spending of populations of households leads to this sufficient condition which is falsifiable from … is, indeed, positive definite. The required heterogeneity condition is also well supported in this data where one can not …