A Comparison of the Labor Supply Findings from the Four Negative Income Tax Experiments
综合分析了美国1968至1982年四次负所得税实验的劳动力供给反应，发现丈夫、妻子和单身女性户主、青年分别减少约2、3、4周全职工作，结果与观察研究一致。
Between 1968 and 1982, the United States federal government sponsored four negative income tax experiments. This paper provides a set of consensus estimates of the labor supply responses to these experiments. It is found that despite the wide range of treatments and evaluation methodologies, the results are remarkably consistent. On average, husbands reduced labor supply by about the equivalent of two weeks of full-time employment. Wives and single female heads reduced labor supply by about the equivalent of three weeks of full-time employment. Youth reduced labor supply by about the equivalent of four weeks of full-time employment. Estimated income and substitution effects are quite similar to those obtained from nonexperimental studies.