We measure provider coverage networks for plans on the Massachusetts health insurance exchange using a two measures: consumer surplus from a hospital demand system and the fraction of population hospital admissions that would be covered by the network. The two measures are highly correlated, and...

To what extent does household inequality affect the response of aggregate consumption to aggregate real shocks? We first review two state-of-the-art papers with household heterogeneity and aggregate uncertainty. They teach us that having a larger fraction of poor and borrowing constrained...

Standardization of complex products is touted as improving consumer decisions and intensifying price competition, but evidence on standardization is limited. We examine a natural experiment: the standardization of health insurance plans on the Massachusetts Health Insurance Exchange....

Dynamic defaults for recurring purchases determine what happens to consumers enrolled in a product or service who take no action at a decision point. Consumers may face automatic renewal, automatic switching, or non-purchase defaults. Privately optimal dynamic defaults depend on the...

In old age, consumption can fluctuate because of shocks to available resources and because health shocks affect utility from consumption. We find that even temporary drops in income and health are associated with drops in consumption and most of the effect of temporary drops in health on...

We document some key facts about aggregate consumption and its subcomponents over time. We then document the behavior of some important determinants of consumption, such as consumers' expectations about their future income, and changes in the consumers' wealth positions. Finally, we use a simple...