WORKING OVER TIME: DYNAMIC INCONSISTENCY IN REAL EFFORT TASKS

• 成果类型: Article
• 署名作者: Augenblick, Ned; Niederle, Muriel; Sprenger, Charles
• 署名单位: Stanford University; Stanford University; National Bureau of Economic Research
• 刊物名称: QUARTERLY JOURNAL OF ECONOMICS
• ISSN/ISSBN: 0033-5533
• DOI: 10.1093/qje/qjv020
• 发表日期: 2015
• 页码: 1067-1115
• 关键词: Discount rates; self-control; preferences; heroin; CHOICE; RISK

摘要

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 present bias. However, such monetary studies contain often-discussed confounds. In this article, we sidestep these confounds and investigate choices over consumption (real effort) in a longitudinal experiment. We pair this effort study 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.