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Simultaneous equations in ordered discrete responses with regressor-dependent thresholds

机译:具有回归变量阈值的有序离散响应中的联立方程

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摘要

The parameters of ordered discrete response (ODR) models are identified only up to a positive scale. In this paper, we examine the identification issue for simultaneous equations with ODR, where the well-known identification problem in simultaneous equations of recovering structural-form parameters from reduced-form parameters is compounded with the ODR identification problem. We allow the thresholds in ODR to be regressor dependent as well as constant; the former is particularly challenging because threshold parameters get mixed with regression parameters, adding one more dimension to the identification problem. We also explore a cross-equation restriction on threshold differences, under which the structural form parameters are fully identified as if the dependent variables are continuously distributed. An empirical example with farm-household joint labour supply is provided to illustrate the identification issues, to show how our proposals work and to apply tests devised for the threshold constancy and cross-equation restrictions.
机译:有序离散响应(ODR)模型的参数仅在正数范围内才能识别。在本文中,我们研究了具有ODR的联立方程的识别问题,其中从简化形式参数中恢复结构形式参数的联立方程中众所周知的识别问题与ODR识别问题混合在一起。我们允许ODR中的阈值既依赖于回归变量,也依赖于常数。前者特别具有挑战性,因为阈值参数与回归参数混合在一起,为识别问题增加了一个维度。我们还探讨了对阈值差异的交叉方程式限制,在该限制下,结构形式参数被完全识别,就好像因变量是连续分布的一样。提供了一个具有农户与家庭共同劳力供应的经验示例,以说明识别问题,展示我们的建议如何工作以及应用为阈值恒定和交叉等式限制而设计的测试。

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