美联储：解释世界储蓄（英文版）

Saving rates are significantly different across countries and remain different for long periods of time. This paper provides an explanation for this phenomenon. We formalize a model of a world economy comprised of open economies inhabited by heterogeneous agents endowed with recursive preferences. Our assumed preferences imply increasing marginal impatience of agents as their consumption rises relative to average consumption of a reference group. Using measured productivity as the sole exogen