We study centipede games played by an infinite sequence of players. Following the literature on time-inconsistent preferences, we distinguish two types of decision makers, naive and sophisticated, and the corresponding solution concepts, naïve ϵ-equilibrium and sophisticated ϵ-equilibrium. We...

I theoretically analyze and empirically identify the optimal default savings rate in automatic enrollment retirement saving plans. I derive a formula for the optimal default as a function of sufficient statistics that can be empirically identified. I estimate individual adherence to the default...

Intertemporal tradeoffs play a key role in many personal decisions and policy questions. We describe models of intertemporal choice, identify empirical regularities in choice, and pose new questions for research. The focus for intertemporal choice research is no longer whether the exponential...

We study the impact of a portable "soft" commitment device on the financial behavior of low-income slum dwellers in Maharashtra, India. 1525 individuals were randomly allocated to receiving either a zip purse and a lockbox (treatment arm) or a lockbox only (control arm). Based on self-reported...

Households' and firms' subjective inflation expectations play a central role in macroeconomic and intertemporal microeconomic models. We discuss how subjective inflation expectations are measured, the patterns they display, their determinants, and how they shape households' and firms' economic...

Proposed alternatives to GDP as a measure of social welfare or human progress are briefly evaluated. Four main categories are considered, namely ISEW and GPI based on corrections of GDP, sustainable or green(ed) GDP, genuine savings/investments and composite indexes. All these alternatives turn...