Investment behaviour and “bull & bear” dynamics: modelling real and stock market interactions
Serena Sordi () and
Journal of Economic Interaction and Coordination, 2020, vol. 15, issue 4, No 5, 867-897
Abstract In this article, we develop a simple behavioural macrodynamic model in continuous-time with the purpose of investigating the interaction of the real economy and the financial markets. Building on Westerhoff (Discret Dyn Nat Soc, 2012), we improve the specification of aggregate demand by distinguishing between consumption and investment expenditure and assuming that the latter is determined by the flexible accelerator principle. We remove the ad hoc nonlinearity in the fundamentalist behavioural rule and allow the composition of the population between chartists and fundamentalists to be endogenously determined. The resulting nonlinear dynamic systems are shown to generate various dynamic regimes, among which the coexistence of periodic attractors with interesting economic implications. Endogenous investment and stock market dynamics emerge, procyclical to each other, reflecting the interaction of induced investment with alternating waves in speculators’ sentiments. We show that a strong investment accelerator might be a crucial force generating fluctuations that, on the one hand, are transmitted and amplified by chartists and, on the other hand, are contained by fundamentalists.
Keywords: Real–financial interaction; Multiplier; Nonlinear accelerator; Heterogeneous speculators; Sentiments (search for similar items in EconPapers)
JEL-codes: E12 E24 E32 E44 (search for similar items in EconPapers)
References: View references in EconPapers View complete reference list from CitEc
Citations: Track citations by RSS feed
Downloads: (external link)
http://link.springer.com/10.1007/s11403-019-00279-w Abstract (text/html)
Access to the full text of the articles in this series is restricted.
Working Paper: Investment behaviour and “bull & bear” dynamics: Modelling real and stock market interactions (2019)
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
Persistent link: https://EconPapers.repec.org/RePEc:spr:jeicoo:v:15:y:2020:i:4:d:10.1007_s11403-019-00279-w
Ordering information: This journal article can be ordered from
http://www.springer. ... ry/journal/11403/PS2
Access Statistics for this article
Journal of Economic Interaction and Coordination is currently edited by A. Namatame, Thomas Lux and Shu-Heng Chen
More articles in Journal of Economic Interaction and Coordination from Springer, Society for Economic Science with Heterogeneous Interacting Agents Contact information at EDIRC.
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().