TY - JOUR AU - Augenblick,Ned AU - Niederle,Muriel AU - Sprenger,Charles TI - Working Over Time: Dynamic Inconsistency in Real Effort Tasks JF - National Bureau of Economic Research Working Paper Series VL - No. 18734 PY - 2013 Y2 - January 2013 UR - http://www.nber.org/papers/w18734 L1 - http://www.nber.org/papers/w18734.pdf N1 - Author contact info: Ned Augenblick Haas School of Business - EAP Group 545 Student Services Building, 1900 Berkeley, CA 94720-1900 Tel: 650-804-5281 E-Mail: ned@haas.berkeley.edu Muriel Niederle Department of Economics 579 Serra Mall Stanford University Stanford, CA 94305-6072 Tel: 650/723-7359 Fax: 650/725-5702 E-Mail: niederle@stanford.edu Charles Sprenger Department of Economics Stanford University Stanford, CA 94305 E-Mail: c.sprenger@gmail.com AB - Experimental tests of dynamically inconsistent time preferences have largely relied on choices over time-dated monetary rewards. Several recent studies have failed to find the standard patterns of time inconsistency. However, such monetary studies contain often discussed confounds. In this paper, we sidestep these confounds and investigate choices over consumption (real effort) in a longitudinal experiment. We pair those effort choices with a companion monetary discounting study. We confirm very limited time inconsistency in monetary choices. However, subjects show considerably more present bias in effort. Furthermore, present bias in the allocation of work has predictive power for demand of a meaningfully binding commitment device. Therefore our findings validate a key implication of models of dynamic inconsistency, with corresponding policy implications. ER -