Publication and Attenuation Biases in Measuring Skill Substitution
研究发现，关于技能与非技能劳动替代弹性的实证文献同时存在发表偏倚和衰减偏倚，其中发表偏倚占主导，校正后的逆弹性更接近零，隐含的平均弹性为4，下限为2，且发展中国家的弹性更小。
Abstract A key parameter in the analysis of wage inequality is the elasticity of substitution between skilled and unskilled labor. We show that the empirical literature is consistent with both publication and attenuation bias in the estimated inverse elasticities. Publication bias, which exaggerates the mean reported inverse elasticity, dominates and results in corrected inverse elasticities closer to zero than the typically published estimates. The implied mean elasticity is 4, with a lower bound of 2. Elasticities are smaller for developing countries. To derive these results, we use nonlinear tests for publication bias and model averaging techniques that account for model uncertainty.