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Animal spirits as an engine of boom-busts and throttle of productivity growth

机译:动物精神是繁荣兴衰的引擎和生产力增长的制约

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摘要

The news-shock literature interprets empirical news-shock identifications as signals about future productivity. Under this view, changes in productivity cause changes in expectations. I investigate an alternative interpretation whereby changes in expectations cause changes in productivity. I present a model where firms adopt the technology of a deterministic frontier, and where self-fulfilling expectational-shocks unleash a frenzy of adoption through which firms increase productivity. Consistent with the news evidence, stock prices and aggregate activity boom, yet TFP increases with a lag. Simulations using i. i.d. expectational-shocks yield moments consistent with the data, and qualitatively capture both high-frequency boom-busts and lower-frequency fluctuations. Finally, estimating a Beaudry-Portier style VECM on the simulated model output to identify a "news shock" recovers impulse response functions largely consistent with the Beaudry and Portier (2006) results. (C) 2015 Elsevier B.V. All rights reserved.
机译:新闻冲击文学将经验主义新闻鉴定解释为未来生产力的信号。在这种观点下,生产力的变化会导致期望的变化。我研究了一种替代解释,其中期望的变化会导致生产率的变化。我提出了一个模型,在该模型中,企业采用确定性边界技术,而自我实现的期望冲击释放了企业采用生产率提高的狂热狂潮。与新闻证据一致,股票价格和总体活动活跃,但全要素生产率却有所上升。使用i进行模拟。 ID。预期冲击的屈服力矩与数据一致,并且定性地捕获了高频动臂的萧条和低频波动。最后,在模拟模型输出上估计Beaudry-Portier风格的VECM以识别“新闻冲击”,从而恢复了与Beaudry和Portier(2006)结果基本一致的脉冲响应函数。 (C)2015 Elsevier B.V.保留所有权利。

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