Despite the intuition that risk preferences affect intertemporal choice because the future is uncertain, time discounting is commonly regarded as a reflection of impatience. This interpretation of time discounting rests on the assumption that risk preferences are fully controlled for in the...

We present new evidence from the lab on the outcomes resulting from collective and individual decisions over time. We combined static and longitudinal methods to test four conditions on individual and collective time preferences: impatience, stationarity, age independence, and dynamic...