on an insurance exchange. Enrollment data show that consumers face switching frictions leading to inertia in plan choice … future prices, theory predicts firms respond to inertia by raising prices on existing enrollees, while introducing cheaper …

for inertia: inattention and switching costs. The model allows for unobserved heterogeneity that is correlated across the … that consumers are more likely to pay attention to plan choice if overspending in the last year is more salient and if … their old plan gets worse, for instance due to premium increases. Moreover, conditional on attention there are significant …

obtaining health insurance reduces prevention and increases unhealthy behaviors among elderly men. We also find evidence that …