Alcohol and Self-Control: A Field Experiment in India
在印度低收入工人中开展实地实验，发现多数人力车夫愿意放弃金钱以激励自己保持清醒，但清醒并未显著改变劳动供给或收入，却使储蓄增加50%。
This paper studies alcohol consumption among low-income workers in India. In a 3-week field experiment, the majority of 229 cycle-rickshaw drivers were willing to forgo substantial monetary payments in order to set incentives for themselves to remain sober, thus exhibiting demand for commitment to sobriety. Randomly receiving sobriety incentives significantly reduced daytime drinking while leaving overall drinking unchanged. I find no evidence of higher daytime sobriety significantly changing labor supply, productivity, or earnings. In contrast, increasing sobriety raised savings by 50 percent, an effect that does not appear to be solely explained by changes in income net of alcohol expenditures.