scholarly journals Skills, Innovation, and Growth: An Agent-Based Policy Analysis

Author(s):  
Herbert Dawid ◽  
Simon Gemkow ◽  
Philipp Harting ◽  
Kordian Kabus ◽  
Michael Neugart ◽  
...  

SummaryWe develop an agent-based macroeconomic model featuring a distinct geographical dimension and heterogeneous workers with respect to skill types. The model, which will become part of a larger simulation platform for European policymaking (EURACE), allows us to conduct exante evaluations of a wide range of public policy measures and their interaction. In particular, we study the growth and labor market effects of various policy types that promote workers’ general skill levels. Using a calibrated model it is examined in how far effects differ if spending is uniformly spread over all regions in the economy or focused in one particular region.We find that the geographic distribution of policy measures significantly affects the effects of the policy even if total spending is kept constant. Focussing training efforts in one region is the worst policy outcome while spreading funds equally across regions generates a larger output in the long-run but not in the short-run.

2021 ◽  
Vol 13 (3) ◽  
pp. 209-250
Author(s):  
Scott R. Baker ◽  
Stephanie Johnson ◽  
Lorenz Kueng

Using comprehensive high-frequency state and local sales tax data, we show that shopping behavior responds strongly to changes in sales tax rates. Even though sales taxes are not observed in posted prices and have a wide range of rates and exemptions, consumers adjust in many dimensions. They stock up on storable goods before taxes rise and increase online and cross-border shopping in both the short and long run. The difference between short- and long-run spending responses has important implications for the efficacy of using sales taxes for countercyclical policy and for the design of an optimal tax framework. Interestingly, households adjust spending similarly for both taxable and tax-exempt goods. We embed an inventory problem into a continuous-time consumption-savings model and demonstrate that this behavior is optimal in the presence of shopping trip fixed costs. The model successfully matches estimated short-run and long-run tax elasticities. We provide additional evidence in favor of this new shopping complementarity mechanism. (JEL E21, E32, G51, H21, H25, H71)


2016 ◽  
Vol 7 (2) ◽  
pp. 164-204 ◽  
Author(s):  
Simplice Asongu

Purpose – A major lesson of the European Monetary Union crisis is that serious disequilibria in a monetary union result from arrangements not designed to be robust to a variety of shocks. With the specter of this crisis looming substantially and scarring existing monetary zones, the purpose of this paper is to complement existing literature by analyzing the effects of monetary policy on economic activity (output and prices) in the CEMAC and UEMOA CFA franc zones. Design/methodology/approach – VARs within the frameworks of Vector Error-Correction Models and Granger causality models are used to estimate the long- and short-run effects, respectively. Impulse response functions are further used to assess the tendencies of significant Granger causality findings. A battery of robustness checks are also employed to ensure consistency in the specifications and results. Findings –H1. monetary policy variables affect prices in the long-run but not in the short-run in the CFA zones (broadly untrue). This invalidity is more pronounced in CEMAC (relative to all monetary policy variables) than in UEMOA (with regard to financial dynamics of activity and size). H2. monetary policy variables influence output in the short-term but not in the long-run in the CFA zones. First, the absence of cointegration among real output and the monetary policy variables in both zones confirm the neutrality of money in the long term. With the exception of overall money supply, the significant effect of money on output in the short-run is more relevant in the UEMOA zone, than in the CEMAC zone in which only financial system efficiency and financial activity are significant. Practical implications – First, compared to the CEMAC region, the UEMOA zone’s monetary authority has more policy instruments for offsetting output shocks but fewer instruments for the management of short-run inflation. Second, the CEMAC region is more inclined to non-traditional policy regimes while the UEMOA zone dances more to the tune of traditional discretionary monetary policy arrangements. A wide range of policy implications are discussed. Inter alia: implications for the long-run neutrality of money and business cycles; implications for credit expansions and inflationary tendencies; implications of the findings to the ongoing debate; country-specific implications and measures of fighting surplus liquidity. Originality/value – The paper’s originality is reflected by the use of monetary policy variables, notably money supply, bank and financial credits, which have not been previously used, to investigate their impact on the outputs of economic activities, namely, real GDP output and inflation, in developing country monetary unions.


Author(s):  
Patrick Mellacher

AbstractHow will the novel coronavirus evolve? I study a simple epidemiological model, in which mutations may change the properties of the virus and its associated disease stochastically and antigenic drifts allow new variants to partially evade immunity. I show analytically that variants with higher infectiousness, longer disease duration, and shorter latent period prove to be fitter. “Smart” containment policies targeting symptomatic individuals may redirect the evolution of the virus, as they give an edge to variants with a longer incubation period and a higher share of asymptomatic infections. Reduced mortality, on the other hand, does not per se prove to be an evolutionary advantage. I then implement this model as an agent-based simulation model in order to explore its aggregate dynamics. Monte Carlo simulations show that a) containment policy design has an impact on both speed and direction of viral evolution, b) the virus may circulate in the population indefinitely, provided that containment efforts are too relaxed and the propensity of the virus to escape immunity is high enough, and crucially c) that it may not be possible to distinguish between a slowly and a rapidly evolving virus by looking only at short-term epidemiological outcomes. Thus, what looks like a successful mitigation strategy in the short run, may prove to have devastating long-run effects. These results suggest that optimal containment policy must take the propensity of the virus to mutate and escape immunity into account, strengthening the case for genetic and antigenic surveillance even in the early stages of an epidemic.


Author(s):  
Dov Cohen ◽  
Ivan Hernandez ◽  
Karl Gruschow ◽  
Andrzej Nowak ◽  
Michele J Gelfand ◽  
...  

A commitment to honor is a commitment to irrationality—at least in the short-run—because it involves defending one’s honor, regardless of stakes or cost. Yet, circumstances giving rise to honor cultures—lawless environments, portable (easy-to-steal) wealth—create milieus where people must appear tough to deter predators. Thus, what seems irrational in the short-run may be rational in the long-run. This chapter describes three agent-based models exploring when an honor stance is advantageous and examining population dynamics of strategies in the environment. Models track empirical observations well. Further, models highlight: how prosocial reciprocity (not just vengeance) is crucial for honor to thrive; how positive and negative reciprocity become correlated over time in honor cultures; the rise of a strategy opposite to honor and how honor and its opposite exist symbiotically; how evolution cannot be outsmarted but can be “outdumbed”; cycling of strategies’ popularity; and Child × Environment interactions producing drift.


2018 ◽  
Vol 22 (2) ◽  
pp. 501-540 ◽  
Author(s):  
Gerhard Glomm ◽  
Juergen Jung ◽  
Chung Tran

We formulate an overlapping-generations model with household heterogeneity and productive and nonproductive government programs to study the macroeconomic and intergenerational welfare effects of risk premium shocks and government debt reductions. We demonstrate that in a small open economy with a high level of debt, a small increase in the risk premium of the interest rate leads to a substantial contraction in output and negative welfare effects. We then quantify the effects of reducing the debt-to-gross-domestic-product ratio using a wide range of fiscal austerity measures. Our results indicate trade-offs between short-run contractions and long-run expansions in aggregate output. In the short run, spending-based austerity reforms are worse than tax-based reforms in terms of lost income. However, in the long run, spending-based reforms produce higher output than tax-based reforms. In addition, welfare effects vary significantly across generations, skill groups, and working sectors. The current old and middle-aged generations experience welfare losses, whereas future generations are beneficiaries of the reforms.


2020 ◽  
Vol 83 (1) ◽  
pp. 70-87 ◽  
Author(s):  
Aron Szekely ◽  
Giulia Andrighetto ◽  
Nicolas Payette ◽  
Luca Tummolini

From inmates in prison gangs to soldiers in elite units, the intimidating reputation of groups often precedes its members. While individual reputation is known to affect people’s aggressiveness, whether one’s group reputation can similarly influence behavior in conflict situations is yet to be established. Using an economic game experiment, we isolate the effect of group reputation on aggression and conflict from that of individual reputation. We find that group reputation can increase the willingness to inflict costs on others but only when individuals are able to punish their fellow members. Even if internal discipline can sustain their shared reputation, more intimidating groups provide fewer benefits to their members in the short run. Using an agent-based simulation, we show that this might not be the case in the long run. Our findings yield insights into the effects of group reputation on aggression, conflict, and possible consequences for group survival.


2009 ◽  
Vol 99 (1) ◽  
pp. 458-471 ◽  
Author(s):  
Stephen F Hamilton

I examine excise taxes levied on multiproduct retailers. Excise taxes reduce equilibrium output and decrease equilibrium product variety in the short run, but taxes can raise output per product in the long run and induce entry. Excise taxes are overshifted into prices in a wide range of cases, including under linear and concave demand conditions, and excise taxes shift less than one-for-one into prices only when demand is highly convex. Multiproduct transactions substantively alter the efficiency of ad valorem and specific forms of excise taxes and affect the comparison of relative tax performance over short-run and long-run time horizons. (JEL H25, H32, L11, L13, L81)


2018 ◽  
Vol 56 (2) ◽  
pp. 253-268
Author(s):  
Petar Mitić ◽  
Slobodan Cvetanović

Abstract This paper investigates the interdependence between environmental degradation (CO2 emissions) and economic growth (GDP per capita) in nine SEE countries over the period 1992 – 2016. The results of Granger causality testing indicate that in the short run there is a positive bidirectional causal relationship between CO2 emissions and GDP per capita, but in the long run, there is causality running just from GDP per capita to CO2 emissions, with the 2.0279% speed of adjustment. In pursuit of adequate policy measures, SEE countries need to work on inclusion of non-EU countries into European Union’s Emissions Trading Scheme, further developing carbon taxation policies and using renewable energy sources on a larger scale.


2016 ◽  
Vol 42 (5) ◽  
pp. 449-471 ◽  
Author(s):  
Ioannis Papantonis

Purpose – The purpose of this paper is to present an alternative approach to equity trading that is based on cointegration. If there are long-run equilibria among financial assets, a cointegration-based trading strategy can exploit profitable opportunities by capturing mean-reverting short-run deviations. Design/methodology/approach – First, the author introduces an equity indexing technique to form cointegration tracking portfolios that are able to replicate an index effectively. The author later enhances this tracking methodology in order to construct more complex portfolio-trading strategies that can be approximately market neutral. The author monitors the performance of a wide range of trading strategies under different specifications, and conducts an in-depth sensitivity analysis of the factors that affect the optimal portfolio construction. Several statistical-arbitrage tests are also carried out in order to examine whether the profitability of the cointegration-based trading strategies could indicate a market inefficiency. Findings – The author shows that under certain parameter specifications, an efficient tracking portfolio is able to produce similar patterns in terms of returns and volatility with the market. The author also finds that a successful long-short strategy of two cointegration portfolios can yield an annualized return of more than 8 percent, outperforming the benchmark and also demonstrating insignificant correlation with the market. Even though some cointegration-based pairs-trading strategies can consistently generate significant cumulative profits, yet they do not seem to converge to risk-less arbitrages, and thus the hypothesis of market efficiency cannot be rejected. Originality/value – The primary contribution of the research lies within the detailed analysis of the factors that affect the tracking-portfolio performance, thus revealing the optimal conditions that can lead to enhanced returns. Results indicate that cointegration can provide the means to successfully reproducing the risk-return profile of a benchmark and to implementing market-neutral strategies with consistent profitability. By testing for statistical arbitrage, the author also provides new evidence regarding the connection between the profit accumulation of cointegration-based pairs-trading strategies and market efficiency.


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