The paper considers the problems of interpreting subjects’ responses to laboratory intertemporal choice and matching tasks that arise from (i) the existence of capital markets outside the laboratory; (ii) the distinction between observable income and unobservable consumption. It distinguishes...

The paper considers the problems of interpreting subjects’ responses to laboratory intertemporal choice and matching tasks that arise from (i) the existence of capital markets outside the laboratory; (ii) the distinction between observable income and unobservable consumption. It distinguishes...

The paper considers what can be inferred about experimental subjects’ time preferences for consumption from responses to laboratory tasks involving tradeoffs between sums of money at different dates, if subjects can reschedule consumption spending relative to income in external capital...