24.06.2021 • 17/2021
Loneliness during the pandemic – social isolation increases the likelihood of selfish behaviour
Social distancing as a counter-measure to the COVID-19 pandemic has far-reaching social consequences which have so far hardly been discussed from an economic perspective. This is demonstrated in a study by the Halle Institute for Economic Research (IWH). “Experiencing social isolation resulted in the participants in our study making more selfish decisions,” says the author of the study, Sabrina Jeworrek, Assistant Professor at Otto von Guericke University Magdeburg and head of research group in the Department of Structural Change and Productivity at IWH.
Sabrina Jeworrek
Read press release
Investor Relations and IPO Performance
Salim Chahine, Gonul Colak, Iftekhar Hasan, Mohamad Mazboudi
Review of Accounting Studies,
No. 2,
2020
Abstract
We analyze the value of investor relations (IR) strategies to IPO firms. We find that firms that are less visible and have inexperienced management tend to hire IR consultants prior to the issue date. IR consultants help create positive news coverage before an IPO, as reflected in a more optimistic tone of published media. Their presence is associated with higher underpricing at the IPO date but with lower long-run returns. IR-backed IPOs also exhibit disproportionately higher insider-related agency problems, as IR-induced higher underpricing tends to occur primarily in IPOs where underwriter and venture capitalist agency conflicts are more severe. These findings suggest that the IR programs of IPO firm are mostly short-term oriented and facilitate the ulterior motives of some insiders (underwriters and venture capitalists) targeting higher first-day returns.
Read article
19.09.2019 • 19/2019
Long-term effects of privatisation in eastern Germany: award-winning US economist begins large-scale research project at the IWH
It is one of the most prestigious awards in the German scientific community: the Max Planck-Humboldt Research Award 2019 endowed with €1.5 million goes to Ufuk Akcigit, Professor of Economics at the University of Chicago. At the Halle Institute for Economic Research (IWH), Akcigit aims to use innovative methods to investigate why the economy in eastern Germany is still lagging behind that in western Germany – and what role the privatisation process 30 years ago played in this.
Reint E. Gropp
Read press release
The Internet Effects on Sex Crime Offenses – Evidence from the Broadband Internet Expansion in Germany
André Diegmann
Journal of Economic Behavior and Organization,
September
2019
Abstract
This paper studies the effects of the introduction of a new mass medium on sex crime in Germany. I use unique data on criminal offenses and broadband internet measured at the municipal level to shed light on this issue. In order to address endogeneity in broadband internet availability, I exploit technical peculiarities at the regional level that determine the roll-out of high-speed internet. Results provide evidence of a substitution effect of internet exposure on sex crime. The substitution effect is neither driven by differences in reporting behavior, nor by matching processes at the victim and offender side. This suggests that the consumption of extreme media plays an important role in explaining the documented high-speed internet effect.
Read article
The Privatisation Activities of the Treuhandanstalt and the Transformation of the East German Corporate Landscape: A New Dataset for First Explorations
Alexander Giebler, Michael Wyrwich
IWH Technical Reports,
No. 1,
2018
Abstract
Even nearly 30 years after the fall of the Berlin Wall, the privatisation and transformation of East Germany's business landscape is controversially discussed in the media and politics. The privatisation process led to enormous structural changes, which were associated with massive job losses. In particular, the stagnating regional development of East Germany is often blamed on the “long shadow” of the privatisation activities of the Treuhandanstalt (THA). From a scientific perspective, however, there are hardly any contributions dealing with the effects of privatisation activities. The IWH-Treuhand Privatisation Micro Database introduced in this technical report is novel as such that it provides comprehensive information on employment and turnover figures for formerly state-owned enterprises for the early 1990s.
Read article
Crowdsourced Innovation: How Community Managers Affect Crowd Activities
Sabrina Jeworrek, Lars Hornuf
Abstract
In this study, we investigate whether and to what extent community managers in online collaborative communities can stimulate crowd activities through their engagement. Using a novel data set of 22 large online idea crowdsourcing campaigns, we find that active engagement of community managers positively affects crowd activities in an inverted U-shaped manner. Moreover, we evidence that intellectual stimulation by managers increases community participation, while individual consideration of users has no impact on user activities. Finally, the data reveal that community manager activities that require more effort, such as media file uploads instead of simple written comments, have a larger effect on crowd participation.
Read article
20.02.2018 • 2/2018
TV boosts entrepreneurial identity
Entrepreneurship is a key driver of development in free-market economies – and TV is one channel in transporting and promoting an entrepreneurial identity or ‘culture’, as IWH economist Viktor Slavtchev and his co-author Michael Wyrwich find in a recent study. For their analysis, they compare – for the period after 1990 – the entrepreneurship incidence among the inhabitants of East German regions that had West Ger¬man TV signal prior to 1990 to that of the inhabitants of regions without such a signal.
Viktor Slavtchev
Read press release
11.10.2016 • 44/2016
New look and feel for IWH website
The relaunched website of the Halle Institute for Economic Research (IWH) – Member of the Leibniz Association goes live today. After the successful launch of a new corporate design at the beginning of the year, IWH now presents itself also digitally in a new and adjusted way. The redesigned website focuses on IWH’s core issues and provides information tailored to each target group. Due to the responsive design, the new website can be perfectly read and navigated on smartphones and tablets as well.
Read press release
Measuring Income Tax Evasion Using Bank Credit: Evidence from Greece
Nikolaos Artavanis, Adair Morse, Margarita Tsoutsoura
Quarterly Journal of Economics,
No. 2,
2016
Abstract
We document that in semiformal economies, banks lend to tax-evading individuals based on the bank’s assessment of the individual’s true income. This observation leads to a novel approach to estimate tax evasion. We use microdata on household credit from a Greek bank and replicate the bank underwriting model to infer the banks estimate of individuals’ true income. We estimate that 43–45% of self-employed income goes unreported and thus untaxed. For 2009, this implies €28.2 billion of unreported income, implying forgone tax revenues of over €11 billion or 30% of the deficit. Our method innovation allows for estimating the industry distribution of tax evasion in settings where uncovering the incidence of hidden cash transactions is difficult using other methods. Primary tax-evading industries are professional services—medicine, law, engineering, education, and media. We conclude with evidence that contemplates the importance of institutions, paper trail, and political willpower for the persistence of tax evasion.
Read article
Television Role Models and Fertility: Evidence from a Natural Experiment
Peter Bönisch, Walter Hyll
SOEPpapers, Nr. 752,
No. 752,
2015
Abstract
In this paper we study the effect of television exposure on fertility. We exploit a natural experiment that took place in Germany after WWII. For topographical reasons, Western TV programs, which promoted one/no child families, could not be received in certain parts of East Germany. Using an IV approach, we find robust evidence that watching West German TV results in lower fertility. This conclusion is robust to alternative model specifications and data sets. Our results imply that individual fertility decisions are affected by role models or information about other ways of life promoted by media.
Read article