Browsing by Subject "Konjunkturtheorie"

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Business cycles in the economy and in economics : an econometric analysis
(2015) Geiger, Niels; Kufenko, Vadim
It is sometimes pointed out that economic research is prone to move in cycles and react to particular events such as crises and recessions. The present paper analyses this issue through a quantitative analysis by answering two closely related research questions: (1) whether or not there are patterns in the economic literature on business cycles, and (2) whether or not these are correlated with movements in actual economic activity. To tackle these questions, a bibliometric analysis of key terms related to business cycle and crises theory is performed. In a second step, these results are confronted with data on actual economic developments in order to investigate the question of whether or not the theoretical literature follows trends and developments in economic data. Respective time series are detrended by the Kalman filter in order to estimate cycles. To determine the connection between economic activity and developments in the academic literature, a descriptive analysis is scrutinized by Granger causality tests. The paper also includes IRF analysis for quantitative assessment of the effects from economic to bibliometric variables. The results point towards a confirmation of the hypothesis of an effect of business cycles and crises in economic variables on discussions in the literature.
Langfristige Neutralität der Geldpolitik?
(2010) Schmid, Kai Daniel; Spahn, Peter
Macroeconomic theory often strictly separates cyclical analysis from trend analysis. Whereas the former is identified as the short-run phenomenon of a varying capacity utilization, the latter is understood as the long-run problem of economic growth that predominantly focuses on the evolution of basic growth factors, such as the supply of labour and technical progress, and disregards problems of macroeconomic stability. In particular, the consequences of monetary policy actions are modeled nonneutral in the short run but neutral in the long run. Policy implications of the present consensus view of stabilization policy depend on specific assumptions with regard to the equilibrium level of production. Thereby, the interpretation of equilibrium output rests on a separation of supply-side and demand-side adjustment to macroeconomic shocks promoting a dichotomy of short-term and long-term macrodynamics. For the present consensus model of macroeconomic stabilization policy this dichotomy represents one of the basic conceptual features. As non-neutrality is limited to the short run - interest rate policy affects aggregate demand and enables the central bank to target inflation - the system does not face a trade-off between real and nominal variables in the long run. The possibility that monetary policy actions may induce real effects that exceed short-term dynamics has been rarely discussed in mainstream economic literature and consequently has gained little attention in the discussion of monetary policy?s stabilization strategies. However, such a strict separation between short-term (generally associated with demand-side) and long-term (supply-side) macrodynamics not only provokes concern from the stance of basic insights of the theories of economic growth. Rather one has to argue that significant changes of capacity utilization that last over several periods may induce procyclical supply-side adjustments. For this reason, several economists raise severe concerns with regard to the corresponding model-setups described above. In fact, the (over-)simplification of an extensively exogenous evolution of productive capacity on the one hand and the mechanisms of procyclical adjustment of production factors on the other hand reveal a strong macrotheoretical tension. There are several channels that promote procyclical stimulus of aggregate demand and a changing factor utilization to the accumulation and efficiency of an economy?s productive capacity. Changing investment dynamics not only lead to quantitative adjustments of the capital stock, but also stimulate multifactor productivity through technical progress. Moreover, unemployment may forward the emergence of long-term unemployment and reduce the effective supply of labor by mechanisms of labor market hysteresis. This clearly weakens the conventional agreement of a trend-cycle-dichotomy which still plays a central role within the context of models that are used for stabilization analysis. Moreover, the theoretical considerations are supported by empirical findings that provide strong clues for procyclical evolution of productive capacity. Against the background of asymmetric factor utilization due to nominal divergence and the resulting differences in real interest rates EMU-members reflect clear differences with regard to the utilization and accumulation of production factors. As alternating stimuli of aggregate demand and supply support the view that the long-term development of an economy cannot be understood without its short-term outcomes, stabilization policy that is supposed to be nonneutral in the short run will exhibit long-term effects with regard to output and employment. The impact of a changing factor utilization on the accumulation and efficiency of production factors motivates path dependency and the existence of multiple equilibria. As cyclical movements of aggregate demand play a decisive role for the evolution of an economy?s productive capacity stability and uniqueness of long-term equlibria as a system?s point of return become uncertain. In particular, output gaps close not only via the shift of aggregate demand but also due to the procyclical adjustment of potential output. Although there seem to be strong arguments in favor of procyclical adjustment of potential capacity to variations in aggregate demand, monetary policy may not frivolously exploit supply?s elasticity for expansionary stimulus. This is not only due to the fact that supply-side adjustment limits itself to certain ranges but also the evolution of inflation expectations may reduce the reflationary scope. On the other hand, the long-term costs of pronounced underutilization highlight the asymmetric quality of stabilization impulses that seem to be disregarded within ordinary loss functions.
Wellen wirtschaftlichen Wandels – theoretische, historische und statistische Betrachtung
(2015) Geiger, Niels; Hagemann, Harald
This dissertation provides an elaborate discussion of business cycle theory. In particular, the question of peculiarities of individual agents’ behaviour within an economy is analysed: Can macroeconomic fluctuations in various variables, such as production, unemployment etc., be traced back to deviations from Rational Choice standards which are frequently used in economic models, and instead be explained by reference to models of bounded rationality? In order to investigate this question, the dissertation contains both a summary of the history of thought in business cycle theory, as well as an overview of underlying thoughts and applications of theories of bounded rationality and behavioural economics. In particular, literature from cognitive psychology is discussed in this context. The results culminate in a synthesis of business cycle theory and behavioural economics: The influence of individual behavioural characteristics on macroeconomic fluctuations is discussed both on a general theoretical level, as well as through the particular case of a sketch of a behavioural business cycle model.