NDLI: Forecasting macroeconomic fundamentals in economic crises

Content Provider	Springer Nature Link
Author	Bovi, Maurizio Cerqueti, Roy
Copyright Year	2015
Abstract	The paper studies the way economic turmoils influence the lay agents’ predictions of macroeconomic fundamentals. The recent economic crises have, in fact, led several authors to challenge the standard macroeconomic view that all agents are Muth-rational, hence omniscient and homogeneous, forecasters. In this paper lay agents are assumed to be heterogeneous in their predictive ability. Heterogeneity is modeled by assuming that people have equal loss functions, but different asymmetry parameters. The adopted methodological tools are grounded in the standard operational research theory. Specifically, we develop a dynamic stochastic optimization problem, which is solved by performing extensive Monte Carlo simulations. Results show that the less sophisticated forecasters in our setting—the medians—never perform as muthians and that second best (SB) agents do that only occasionally. This regardless the size of the crisis. Thus, as in the real world, in our artificial economy heterogeneity is a structural trait. More intriguingly, simulations also show that the medians’ behavior tend to be relatively smoother than that of SB agents, and that the difference between them widens in the case very serious crises. In particular, great recessions make SB agents’ predictions relatively more biased. An explanation is that dramatic crises extend the available information set (e.g., due to greater mass media coverage), and this leads SB agents, who are more attentive to revise their forecasts than medians. The point is that more information does not necessarily mean better forecasting performances. All considered, thus, our simulations suggest a rewording of Ackoff’s famous phrase: it is not silly to not look for an optimal solution to a mess.
Starting Page	451
Ending Page	469
Page Count	19
File Format	PDF
ISSN	02545330
Journal	Annals of Operations Research
Volume Number	247
Issue Number	2
e-ISSN	15729338
Language	English
Publisher	Springer US
Publisher Date	2015-05-05
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Dynamic stochastic optimization model Economic crisis Forecasting Heterogeneous agents Monte Carlo simulations Operation Research/Decision Theory Combinatorics Theory of Computation
Content Type	Text
Resource Type	Article
Subject	Management Science and Operations Research

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