The Consequences of Narrow Framing for Risk Taking: A Stress Test of Myopic Loss Aversion
通过高统计功效的实验，系统检验了短视损失厌恶（MLA）在不同条件下的稳健性，发现MLA在所有实验条件下均显著存在，挑战了近期对其适用性的质疑。
Narrow bracketing in combination with loss aversion has been shown to reduce individual risk taking. This is known as myopic loss aversion (MLA) and has been corroborated by many studies. Recent evidence has contested this notion, indicating that MLA’s applicability is confined to highly artificial settings. Given the impact of these findings, we reevaluated the evidence on MLA with substantially higher statistical power than in almost all previous studies. We systematically modified the seminal study design by Gneezy and Potters [Gneezy U, Potters J (1997) An experiment on risk taking and evaluation periods. Quart. J. Econom. 112(2):631–645] to include five key adjustments. These involved downscaled returns, return compounding, and extended investment horizons. Our results, which are highly robust to analytical heterogeneity, consistently document the presence of MLA across all experimental conditions. This paper was accepted by John Beshears, behavioral economics and decision analysis. Supplemental Material: The online appendix and data files are available at https://doi.org/10.1287/mnsc.2024.05720 .