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    <title>EconStor Community: Fächergruppe Volkswirtschaftslehre, Helmut-Schmidt-Universität (HSU)</title>
    <link>https://hdl.handle.net/10419/124</link>
    <description>Fächergruppe Volkswirtschaftslehre, Helmut-Schmidt-Universität (HSU)</description>
    <pubDate>Tue, 05 May 2026 04:17:46 GMT</pubDate>
    <dc:date>2026-05-05T04:17:46Z</dc:date>
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      <title>Commitment versus Präemption: Zum Wesen der Initiative</title>
      <link>https://hdl.handle.net/10419/266501</link>
      <description>Title: Commitment versus Präemption: Zum Wesen der Initiative
Authors: Beckmann, Klaus; Dewenter, Ralf
Abstract: Dieser Beitrag untersucht den Begriff der Initiative in Strategie und operativer Kunst aus spieltheoretischer Perspektive. Wir modellieren dazu den Unterschied zwischen den beiden Wirkmechanismen der Initiative: der Einflussnahme auf gegnerisches Verhalten zum einen und der Beschneidung der gegnerischen Möglichkeiten zum anderen. Ein einfaches Cournot-Dyopol dient zur Illustration des Grundgedankens. Dieser wird dann auf die Gesamtheit der 78 verschiedenen strikt ordinalen 2 × 2-Spiele übertragen. Gemeinsam mit einem Gegenbeispiel in Form eines strikt ordinalen 2 × 3-Spiels wird so verdeutlicht, dass und wie sich die beiden Formen der Initiative analytisch unterscheiden.</description>
      <pubDate>Sat, 01 Jan 2022 00:00:00 GMT</pubDate>
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      <dc:date>2022-01-01T00:00:00Z</dc:date>
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      <title>The impact of the more economic approach on EU merger decisions</title>
      <link>https://hdl.handle.net/10419/266504</link>
      <description>Title: The impact of the more economic approach on EU merger decisions
Authors: Bernhardt, Lea; Dewenter, Ralf
Abstract: This paper analyses all final merger decisions by the European Commission from the beginning of 1990 up to the end of 2019. We use a novel dataset, containing information about 6245 merger cases from all economic sectors and combining all sorts of decisions, inclusive of withdrawn and prohibited cases. Using text analyses techniques, we first analyse merger decisions documents in order to find trends and differences in language and wording with respect to the 2004 regulation. As a result, we find a shift in favour of terms associated with the More Economic Approach. On the contrary, the concept of dominance has decreased since 2004, indicating a strong decline in structural market parameters for merger reviews. While the tonality is found to be largely positive (especially for cleared cases), again, a change under different merger regimes seems to be evident. Second, accounting for differences in the usage of competition-related terms and by using simple OLS and logit regressions, we find that the duration of the merger review has increased significantly after the 2004 reform. At the same time, the probability of a merger being prohibited has not changed significantly.</description>
      <pubDate>Sat, 01 Jan 2022 00:00:00 GMT</pubDate>
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      <dc:date>2022-01-01T00:00:00Z</dc:date>
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      <title>Endogenous network effects</title>
      <link>https://hdl.handle.net/10419/266503</link>
      <description>Title: Endogenous network effects
Authors: Dewenter, Ralf; Löw, Franziska
Abstract: In contrast to traditional business models, two-sided platforms internalize indirect network effects that exist between different groups of platform participants. The strength of the network effects has a decisive influence on the success of the platform and its market position. Markets with particularly strong network effects are also often characterized by a high degree of concentration. However, the strength of the network effects is not exogenously given but can be influenced by targeted investment. This paper analyses how platforms can affect network effects by investing in appropriate infrastructure, data, or artificial intelligence. We derive optimal quantities, prices, profits, and investments depending on different types of investments.</description>
      <pubDate>Sat, 01 Jan 2022 00:00:00 GMT</pubDate>
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      <dc:date>2022-01-01T00:00:00Z</dc:date>
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      <title>Biased reporting by the German media?</title>
      <link>https://hdl.handle.net/10419/266502</link>
      <description>Title: Biased reporting by the German media?
Authors: Löw, Franziska; Dewenter, Ralf
Abstract: The dynamics of online news and political outcomes have been of high interest in various research fields in recent years. This paper provides a new method to estimate media bias using a structural topic model and cosine similarity to test slanting toward different political actors. For the empirical analysis, the content of German online newspapers and press releases of German parties during the election campaign before the federal election in 2017 is analyzed. Following the assumption that a) potential media bias is demand-driven and b) election results can be used as a proxy for reader beliefs, the results show that news articles of most newspapers slant towards AfD topics. Furthermore, we find evidence for the hypothesis that the election day results in changes in news coverage since newspapers can observe the true beliefs of readers.</description>
      <pubDate>Sat, 01 Jan 2022 00:00:00 GMT</pubDate>
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      <dc:date>2022-01-01T00:00:00Z</dc:date>
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