Hysteresis Dynamics in Economic Systems
Summary
Hysteresis in economics refers to the phenomenon whereby temporary shocks produce lasting changes in the trajectory of key variables such as output, employment and investment. Unlike classical models that assume full reversibility, hysteresis models incorporate memory effects and non-linear adjustment mechanisms. A decline in demand or a sudden financial shock may push an economy onto a permanently lower growth path by eroding human capital, depressing potential output and altering expectations. These dynamics are closely linked to path dependence, where past extrema shape future possibilities, and to policy lock-in, in which structural shifts raise the cost of reverting to previous equilibria. Empirical studies have documented hysteresis in labour markets—where unemployment rates fail to revert to pre-shock levels—and in aggregate output, where recessions leave persistent scars. Modelling approaches range from simple threshold and relay models with selective memory to rich agent-based simulations featuring feedback loops between the output gap and capacity. Understanding hysteresis is crucial for designing effective stabilisation policy, anticipating long-term damage from crises such as the global financial downturn of 2008 or the COVID-19 pandemic, and for addressing structural stagnation in both advanced and emerging economies.
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Hysteresis Dynamics in Economic Systems publication trend
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Technical terms
Hysteresis: Persistence of the effects of a temporary shock on an economic variable, so that the system does not return to its original equilibrium.
Path dependence: A process whereby past states or events constrain and shape future development trajectories.
Menu costs: Fixed costs incurred by firms when adjusting prices, which can create non-linear price adjustment dynamics and contribute to output hysteresis.
Agent-based model: A computational framework that simulates interactions of heterogeneous agents to analyse emergent macroeconomic phenomena.
References
- Employment hysteresis in the United States during the COVID-19 pandemic. Economic Research-Ekonomska Istraživanja (2021).
- A theory of economic policy lock-in and lock-out via hysteresis: rethinking economists’ approach to economic policy. Economics: The Open-Access, Open-Assessment E-Journal (2017).
- Do menu costs lead to hysteresis in aggregate output? The experiences of some agent-based simulations. Acta Oeconomica (2022).
- Analysis of hysteresis in convergence after global financial crisis of 2007. E3S Web of Conferences (2021).
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