Adverse effects of control? Evidence from a field experiment
通过亚马逊土耳其机器人（AMT）的田野实验，发现引入控制机制会显著降低工人绩效，尤其在困难任务上，且主要由非金钱动机强的工人驱动。
Abstract We conduct a field experiment with Amazon Mechanical Turk (“AMT”) workers to causally assess the effect of introducing a control mechanism in an existing work relationship on workers’ performance on tasks of varying difficulty. We find that introducing control significantly reduces performance. This reduction occurs primarily on challenging tasks, while performance on simple tasks is unaffected. The negative effects are primarily driven by workers who exhibit non-pecuniary motivation in the absence of control. Our results show that there are adverse effects of control, and they suggest that these adverse effects are of particular concern to firms that rely on high performance on challenging tasks.