The micro and macro of managerial beliefs

• 成果类型: Article
• 署名作者: Barrero, Jose Maria
• 署名单位: Instituto Tecnologico Autonomo de Mexico
• 刊物名称: JOURNAL OF FINANCIAL ECONOMICS
• ISSN/ISSBN: 0304-405X
• DOI: 10.1016/j.jfineco.2021.06.007
• 发表日期: 2022
• 页码: 640-667
• 关键词: Managers; beliefs; Overprecision; Overextrapolation; adjustment costs; reallocation

摘要

This paper studies how biases in managerial beliefs affect managerial decisions, firm performance, and the macroeconomy. Using a new survey of US managers I establish three facts. (1) Managers are not overoptimistic: sales growth forecasts on average do not exceed realizations. (2) Managers are overprecise: they underestimate future sales growth volatility. (3) Managers overextrapolate: their forecasts are too optimistic after positive shocks and too pessimistic after negative shocks. To quantify the implications, I estimate a dynamic general equilibrium model in which managers of heterogeneous firms use a subjective beliefs process to make forward-looking hiring decisions. Overprecision and overextrapolation lead managers to overreact to firm-level shocks and overspend on adjustment costs, destroying 2.1% to 6.8% of the typical firm's value. Pervasive overreaction leads to excess volatility and reallocation, lowering consumer welfare by 0.5% to 2.3% relative to the rational-expectations equilibrium. These findings suggest overreaction could amplify asset-price and business-cycle fluctuations. (c) 2021 Elsevier B.V. All rights reserved.