Die Mär vom egoistischen Ökonomen – Wie Ökonomen auf Anreize reagieren
Dmitri Bershadskyy
Wirtschaft im Wandel,
No. 1,
2018
Abstract
Menschen, die über ökonomische Bildung verfügen, reagieren stärker auf wirtschaftliche Anreize. Entgegen der verbreiteten Annahme handeln Ökonomen jedoch nicht egoistischer als Nicht-Ökonomen, wenn es darum geht, gemeinsam ein öffentliches Gut zu finanzieren. Mit Hilfe eines Experiments, in dem die Teilnehmer echtes Geld gewinnen konnten, wird gezeigt, dass Ökonomen sich stärker an den vorliegenden Anreizstrukturen orientieren. Auf der einen Seite tragen Ökonomen am Anfang leicht höher zu dem öffentlichen Gut bei und fangen signifikant später an, von der sozial optimalen Strategie abzuweichen. Auf der anderen Seite leisten Ökonomen zum Ende des Experiments, wenn Trittbrettfahrerverhalten weniger Konsequenzen hat, deutlich geringere Beiträge als Nicht-Ökonomen. Im zweiten Teil des Experiments wird den Teilnehmenden die Möglichkeit gegeben, in eine Erleichterung der kooperativen Finanzierung des öffentlichen Guts zu investieren, wobei zwischen einem investitionsfreundlichen (Geld-zurück-Garantie) und einem weniger investitionsfreundlichen Szenario (keine Garantie) unterschieden wird. Das Experiment zeigt, dass die Probanden mit ökonomischer Ausbildung auf diesen kleinen Unterschied in den Anreizstrukturen stärker reagieren.
Read article
Endogenous Institution Formation in Public Good Games: The Effect of Economic Education
Martin Altemeyer-Bartscher, Dmitri Bershadskyy, Philipp Schreck, Florian Timme
IWH Discussion Papers,
No. 29,
2017
Abstract
In a public good experiment, the paper analyses to which extent individuals with economic education behave differently in a second-order dilemma. Second-order dilemmas may arise, when individuals endogenously build up costly institutions that help to overcome a public good problem (first-order dilemma). The specific institution used in the experiment is a communication platform allowing for group communication before the first-order public good game takes place. The experimental results confirm the finding of the literature that economists tend to free ride more intensively in public good games than non-economists. The difference is the strongest in the end-game phase, yielding in the conclusion that the magnitude of the end-game effect depends on the share of economists in the pool of participants. When it comes to the building-up of institutions, the individual efficiency gain of the institution and its inherent cost function constitute the driving forces for the contribution behaviour. Providing an investment friendly environment yields in economists contributing more to the institution than non-economists. Therefore, we make clear that first-order results of a simple public good game cannot be simply applied for second-order incentive problems.
Read article
14.12.2017 • 39/2017
Cyclical upswing in Germany and in the world
At the turn of the year, the cyclical upswing in Germany continues. Gross domestic product is expected to increase by 2.2% in 2017, and because this year has seen significantly fewer working days than before, the rate of change amounts, adjusted for calendar effects, to even 2.5%. “The upswing is broad-based”, says Oliver Holtemöller, head of the Department Macroeconomics and IWH vice president. “For quite a long time now, significant increases in employment have been driving private incomes, consumption and housing construction. The latter was, in addition, stimulated by low interest rates.” Currently, German exports are benefiting from the vivid international economy. Not least since monetary policy in the euro area remains expansionary for the time being, we expect the upturn to continue in 2018 and production to increase again by 2.2%. Consumer price inflation is, with 1.7%, still moderate in both 2017 and 2018. Although domestic price pressures are on the rise, the effects of the energy price increase in 2017 expire in 2018, and the appreciation of the euro in the summer of 2017 will dampen price dynamics.
Oliver Holtemöller
Read press release
07.09.2017 • 32/2017
The German economy: Growing strongly
In the summer of 2017, the upswing in Germany continues. „For this year, we forecast gross domestic product to expand by 1.9%, as it did in 2016, and for 2018 by 2.0%” says Oliver Holtemöller, head of the Department Macroeconomics and IWH vice president.
Oliver Holtemöller
Read press release
09.08.2017 • 29/2017
Networked and protected
During the financial crisis, billions were spent to rescue banks that were according to their governments too big to be allowed to fail. But a study by Michael Koetter from the Halle Institute for Economic Research (IWH) and co-authors shows that besides the size of the banks, the centrality within the global financial network was also pivotal for financial institutions to receive a bail-out.
Michael Koetter
Read press release
The Effects of Local Elections on National Military Spending: A Cross-country Study
Liuchun Deng, Yufeng Sun
Defence and Peace Economics,
No. 3,
2017
Abstract
In this paper, we study the domestic political determinants of military spending. Our conceptual framework suggests that power distribution over local and central governments influences the government provision of national public goods, in our context, military expenditure. Drawing on a large cross-country panel, we demonstrate that having local elections will decrease a country’s military expenditure markedly, controlling for other political and economic variables. According to our preferred estimates, a country’s military expenditure is on average 20% lower if its state government officials are locally elected, which is consistent with our theoretical prediction.
Read article
29.09.2016 • 40/2016
Joint Economic Forecast: German Economy on Track – Economic Policy needs to be Realigned
Thanks to a stable job market and solid consumption, the German economy is experiencing a moderate upswing. The GDP is expected to increase by 1.9 percent this year, 1.4 percent in 2017, and 1.6 percent in 2018, according to the Gemeinschaftsdiagnose (GD, joint economic forecast) that was prepared by five of Europe’s leading economic research institutes on behalf of the Federal Government. The most recent GD, which was released in April, predicted a GDP growth rate of 1.6 percent for 2016 and 1.5 percent for 2017.
Read press release
09.09.2016 • 38/2016
The Perception of Financial Inferiority Nurtures Negative Attitudes Towards Foreigners
When people feel that their own economic status is inferior to the economic status of a relevant peer group, it becomes more likely that they develop negative attitudes towards foreigners. This link was found in a new study of the Halle Institute for Economic Research (IWH) – Member of the Leibniz Association. The effect is particularly strong with respect to foreigners from low-wage countries.
Walter Hyll
Read press release
Taxation, Corruption, and Growth
Philippe Aghion, Ufuk Akcigit, Julia Cagé, William R. Kerr
European Economic Review,
2016
Abstract
We build an endogenous growth model to analyze the relationships between taxation, corruption, and economic growth. Entrepreneurs lie at the center of the model and face disincentive effects from taxation but acquire positive benefits from public infrastructure. Political corruption governs the efficiency with which tax revenues are translated into infrastructure. The model predicts an inverted-U relationship between taxation and growth, with corruption reducing the optimal taxation level. We find evidence consistent with these predictions and the entrepreneurial channel using data from the Longitudinal Business Database of the US Census Bureau. The marginal effect of taxation for growth for a state at the 10th or 25th percentile of corruption is significantly positive; on the other hand, the marginal effects of taxation for growth for a state at the 90th percentile of corruption are much lower across the board. We make progress towards causality through Granger-style tests and by considering periphery counties where effective tax policy is largely driven by bordering states. Finally, we calibrate our model and find that the calibrated taxation rate of 37% is fairly close to the model׳s estimated welfare maximizing taxation rate of 42%. Reducing corruption provides the largest potential impact for welfare gain through its impact on the uses of tax revenues.
Read article
03.05.2016 • 20/2016
Are Lacking Structural Reforms in the Financial Sector the Underlying Reason for the German Criticism of the ECB?
The major reason for the intense criticism of the European Central Bank’s (ECB’s) low-interest-rate policy may be the lack of structural reforms in the German banking system. The resulting persistent fragmentation increases the banking sector’s vulnerability to the low-interest-rate environment. Hence, parts of the banking sector, due to their strong ties to politicians, appear to have successfully influenced public opinion against the ECB.
Reint E. Gropp
Read press release