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Is the technology-driven real business cycle hypothesis dead? Shocks and aggregate fluctuations revisited

机译:技术驱动的真实商业周期假设是否成立?再次探讨冲击和总体波动

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This paper re-examines recent empirical evidence that positive technology shocks lead to short-run declines in hours. Building on Gali's [1999. Technology, employment, and the business cycle: do technology shocks explain aggregate fluctuations. American Economic Review 89, 249-271] work, which uses long-run restrictions to identify technology shocks, we analyze whether the identified shocks can be plausibly interpreted as technology shocks. We first examine the validity of the identification assumption in a DGE model with several possible sources of permanent shocks. We then empirically assess the plausibility of the shocks using a variety of tests. After finding that the shocks pass all of the tests, we present two examples of modified DGE models that match the facts.
机译:本文重新检验了最近的经验证据,即积极的技术冲击会导致小时数的短期下降。基于Gali [1999年。技术,就业和商业周期:技术冲击能解释总体波动。 [American Economic Review 89,249-271]工作,它使用长期限制来识别技术冲击,我们分析了所识别的冲击是否可以合理地解释为技术冲击。我们首先检查DGE模型中具有几种可能的永久冲击源的识别假设的有效性。然后,我们使用各种测试从经验上评估电击的合理性。在发现冲击波通过了所有测试之后,我们提供了两个与事实相符的经过修改的DGE模型的示例。

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