Passive Decisions and Potent Defaults

Default options have an enormous impact on household choices.' Defaults matter because opting out of a default is costly and these costs change over time, generating an option value of waiting. In addition, people have a tendency to procrastinate. We develop a theory of optimal defaults based on

默认选项（Default options）对家庭选择具有巨大影响。默认选项之所以重要，是因为退出默认选项需要付出成本，且这些成本会随时间变化，从而产生等待的期权价值（option value of waiting）。此外，人们往往存在拖延倾向。我们基于……提出了最优默认选项理论。