Hysteresis through learning by doing: Estimating endogenous productivity
利用宏观经济数据估计干中学模型的关键参数，发现生产率持续性为0.91，生产率对滞后就业的弹性平均为0.22，为宏观模型提供了经验基础。
Learning by doing (LBD), a mechanism whereby productivity depends on past employment, is increasingly used in macroeconomic models to capture hysteresis and endogenous productivity. A key challenge has been calibrating its structural parameters, primarily due to the limited availability of empirical estimates. We estimate a productivity persistence of 0.91 and an elasticity of productivity with respect to lagged employment ranging from 0.13 to 0.30, with seven statistically significant estimates averaging 0.22. These results provide empirically grounded parameters and demonstrate the value of LBD as a tractable approach to capturing endogenous and procyclical productivity dynamics in macroeconomic models. • Learning by doing is a mechanism whereby productivity depends on past employment. • We estimate key parameters for learning-by-doing models using macroeconomic data. • Productivity persistence is estimated at 0.91. • The elasticity of productivity with respect to lagged employment averages 0.22. • Learning by doing effectively models endogenous, procyclical productivity.