@techreport{LessmannGrunerKalkuhletal.2024,
  type      = {Working Paper},
  author    = {Lessmann, Kai and Gruner, Friedemann and Kalkuhl, Matthias and Edenhofer, Ottmar},
  title     = {Emissions Trading with Clean-up Certificates},
  series = {CEPA Discussion Papers},
  journal   = {CEPA Discussion Papers},
  number    = {79},
  issn      = {2628-653X},
  doi       = {10.25932/publishup-64136},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-641368},
  pages     = {35},
  year      = {2024},
  abstract  = {We analyze how conventional emissions trading schemes (ETS) can be modified by introducing "clean-up certificates" to allow for a phase of net-negative emissions. Clean-up certificates bundle the permission to emit CO2 with the obligation for its removal. We show that demand for such certificates is determined by cost-saving technological progress, the discount rate and the length of the compliance period. Introducing extra clean-up certificates into an existing ETS reduces near-term carbon prices and mitigation efforts. In contrast, substituting ETS allowances with clean-up certificates reduces cumulative emissions without depressing carbon prices or mitigation in the near term. We calibrate our model to the EU ETS and identify reforms where simultaneously (i) ambition levels rise, (ii) climate damages fall, (iii) revenues from carbon prices rise and (iv) carbon prices and aggregate mitigation cost fall. For reducing climate damages, roughly half of the issued clean-up certificates should replace conventional ETS allowances. In the context of the EU ETS, a European Carbon Central Bank could manage the implementation of cleanup certificates and could serve as an enforcement mechanism.},
  language  = {en}
}
@techreport{BarschkettHuebenerLeibingetal.2023,
  type      = {Working Paper},
  author    = {Barschkett, Mara and Huebener, Mathias and Leibing, Andreas and Marcus, Jan and Margaryan, Shushanik},
  title     = {Replication of Atwood's (2022) the long-term effects of measles vaccination on earnings and employment},
  series = {I4R discussion paper series},
  journal   = {I4R discussion paper series},
  number    = {33},
  publisher = {Institute for Replication},
  address   = {Essen},
  issn      = {2752-1931},
  pages     = {22},
  year      = {2023},
  abstract  = {Atwood (2022) analyzes the effects of the 1963 U.S. measles vaccination on longrun labor market outcomes, using a generalized difference-in-differences approach. We reproduce the results of this paper and perform a battery of robustness checks. Overall, we confirm that the measles vaccination had positive labor market effects. While the negative effect on the likelihood of living in poverty and the positive effect on the probability of being employed are very robust across the different specifications, the headline estimate-the effect on earnings-is more sensitive to the exclusion of certain regions and survey years.},
  language  = {en}
}
@techreport{BorckMulder2024,
  type      = {Working Paper},
  author    = {Borck, Rainald and Mulder, Peter},
  title     = {Energy policies and pollution in two developing country cities},
  series = {CEPA Discussion Papers},
  journal   = {CEPA Discussion Papers},
  number    = {78},
  issn      = {2628-653X},
  doi       = {10.25932/publishup-63847},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-638472},
  pages     = {37},
  year      = {2024},
  abstract  = {We study the effect of energy and transport policies on pollution in two developing country cities. We use a quantitative equilibrium model with choice of housing, energy use, residential location, transport mode, and energy technology. Pollution comes from commuting and residential energy use. The model parameters are calibrated to replicate key variables for two developing country cities, Maputo, Mozambique, and Yogyakarta, Indonesia. In the counterfactual simulations, we study how various transport and energy policies affect equilibrium pollution. Policies may be induce rebound effects from increasing residential energy use or switching to high emission modes or locations. In general, these rebound effects tend to be largest for subsidies to public transport or modern residential energy technology.},
  language  = {en}
}
@techreport{AndresBruttel2024,
  type      = {Working Paper},
  author    = {Andres, Maximilian and Bruttel, Lisa},
  title     = {Communicating Cartel Intentions},
  series = {CEPA Discussion Papers},
  journal   = {CEPA Discussion Papers},
  number    = {77},
  issn      = {2628-653X},
  doi       = {10.25932/publishup-63846},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-638469},
  pages     = {36},
  year      = {2024},
  abstract  = {While the economic harm of cartels is caused by their price-increasing effect, sanctioning by courts rather targets at the underlying process of firms reaching a price-fixing agreement. This paper provides experimental evidence on the question whether such sanctioning meets the economic target, i.e., whether evidence of a collusive meeting of the firms and of the content of their communication reliably predicts subsequent prices. We find that already the mere mutual agreement to meet predicts a strong increase in prices. Conversely, express distancing from communication completely nullifies its otherwise price-increasing effect. Using machine learning, we show that communication only increases prices if it is very explicit about how the cartel plans to behave.},
  language  = {en}
}
@techreport{SchwabKrauseMassoud2023,
  type      = {Working Paper},
  author    = {Schwab, Regine and Krause, Werner and Massoud, Samer},
  title     = {The bombing of hospitals and local violence dynamics in civil wars},
  series = {HiCN Working paper},
  volume    = {403},
  journal   = {HiCN Working paper},
  publisher = {Households in Conflict Network},
  address   = {Berlin},
  pages     = {89},
  year      = {2023},
  abstract  = {The impact of civilian harm on strategic outcomes in war has been the subject of persistent debate. However, the literature has primarily focused on civilian casualties, thereby overlooking the targeting of civilian infrastructure, which is a recurrent phenomenon during war. This study fills this gap by examining the targeting of healthcare, one of the most indispensable infrastructures during war and peace time. We contend that attacks on medical facilities are distinct from direct violence against civilians. Because they are typically unrelated to military dynamics, the targeting of hospitals is a highly visible form and powerful signal of civilian victimization. To assess its effects, we analyze newly collected data on such attacks by pro-government forces and event data on combat activities in Northwest Syria (2017-2020). Applying a new approach for panel data analysis that combines matching methods with a difference-in-differences estimation, we examine the causal effect of counterinsurgent bombings on subsequent violent events. Distinguishing between regime-initiated and insurgent-initiated combat activities and their associated fatalities, we find that the targeting of hospitals increases insurgent violence. We supplement the quantitative analysis with unique qualitative evidence derived from interviews, which demonstrates that hospital bombings induce rebels to resist more fiercely through two mechanisms: intrinsic motivations and civilian pressure. The results have important implications for the effects of state-led violence and the strength of legal norms that protect noncombatants.},
  language  = {en}
}
@techreport{KritikosMalirantaNippalaetal.2024,
  type      = {Working Paper},
  author    = {Kritikos, Alexander and Maliranta, Mika and Nippala, Veera and Nurmi, Satu},
  title     = {Does gender of firm ownership matter?},
  series = {CEPA Discussion Papers},
  journal   = {CEPA Discussion Papers},
  number    = {76},
  issn      = {2628-653X},
  doi       = {10.25932/publishup-63619},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-636194},
  pages     = {1 -- 39},
  year      = {2024},
  abstract  = {We examine how the gender of business-owners is related to the wages paid to female relative to male employees working in their firms. Using Finnish register data and employing firm fixed effects, we find that the gender pay gap is - starting from a gender pay gap of 11 to 12 percent - two to three percentage-points lower for hourly wages in female-owned firms than in male-owned firms. Results are robust to how the wage is measured, as well as to various further robustness checks. More importantly, we find substantial differences between industries. While, for instance, in the manufacturing sector, the gender of the owner plays no role for the gender pay gap, in several service sector industries, like ICT or business services, no or a negligible gender pay gap can be found, but only when firms are led by female business owners. Businesses in male ownership maintain a gender pay gap of around 10 percent also in the latter industries. With increasing firm size, the influence of the gender of the owner, however, fades. In large firms, it seems that others - firm managers - determine wages and no differences in the pay gap are observed between male- and female-owned firms.},
  language  = {en}
}
@techreport{DebreSommerer2023,
  type      = {Working Paper},
  author    = {Debre, Maria Josepha and Sommerer, Thomas},
  title     = {Weathering the storm?},
  series = {IGCC series on authoritarian regimes and international organizations},
  journal   = {IGCC series on authoritarian regimes and international organizations},
  publisher = {UC Institute on Global Conflict and Cooperation},
  address   = {La Jolla, CA},
  pages     = {38},
  year      = {2023},
  abstract  = {Democratization scholars are currently debating if we are indeed witnessing a third wave of autocratization. While this has led to an extensive debate about the future of the liberal international order, we still know relatively little about the consequences of autocratization for international organizations (IOs). In this article, we explore to what extent autocratization has led to changes in the composition of IO membership. We propose three different ways of conceptualizing autocratization of IO membership. We argue that we should move away from a dichotomous understanding of regime type and regime change, but rather focus on composition of subregime types to understand current developments. We build on updated membership data for 73 IOs through 2020 to map membership configurations based on the V-Dem Electoral Democracy Index. Contrary to current debates on the crisis of the liberal order, we find that many IOs are not (yet) affected by broad autocratization of their membership that would endanger democratic majorities or overall democratic densities. However, we also observe the disappearance of formerly homogenous democratic clubs due to democratic backsliding in a number of European and Latin American IO member states, as well as a return of autocratic clubs in Southeast Asia and Southern Africa. These findings have important implications for the broader research agenda on international democracy promotion and human right protection as well as the study of legitimacy and the effectiveness of international organizations.},
  language  = {en}
}
@techreport{Doerfler2021,
  type      = {Working Paper},
  author    = {D{\"o}rfler, Thomas},
  title     = {Interface challenges of UN sanctions with forums of export control},
  series = {International sanctions: improving implementation through better interface management},
  journal   = {International sanctions: improving implementation through better interface management},
  editor    = {Lohmann, Sascha and Vorrath, Judith},
  publisher = {Stiftung Wissenschaft und Politik},
  address   = {Berlin},
  pages     = {23 -- 31},
  year      = {2021},
  language  = {en}
}
@techreport{CaliendoCobbClarkSilvaGoncalvesetal.2023,
  type      = {Working Paper},
  author    = {Caliendo, Marco and Cobb-Clark, Deborah A. and Silva-Goncalves, Juliana and Uhlendorff, Arne},
  title     = {Locus of control and the preference for agency},
  series = {IZA discussion paper},
  volume    = {No. 16061},
  journal   = {IZA discussion paper},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {2365-9793},
  doi       = {10.2139/ssrn.4416820},
  pages     = {49},
  year      = {2023},
  abstract  = {We conduct a laboratory experiment to study how locus of control operates through people's preferences and beliefs to influence their decisions. Using the principal-agent setting of the delegation game, we test four key channels that conceptually link locus of control to decision-making: (i) preference for agency; (ii) optimism and (iii) confidence regarding the return to effort; and (iv) illusion of control. Knowing the return and cost of stated effort, principals either retain or delegate the right to make an investment decision that generates payoffs for themselves and their agents. Extending the game to the context in which the return to stated effort is unknown allows us to explicitly study the relationship between locus of control and beliefs about the return to effort. We find that internal locus of control is linked to the preference for agency, an effect that is driven by women. We find no evidence that locus of control influences optimism and confidence about the return to stated effort, or that it operates through an illusion of control.},
  language  = {en}
}
@techreport{MatzatSchmeisser2023,
  type      = {Working Paper},
  author    = {Matzat, Johannes and Schmeißer, Aiko},
  title     = {Do unions shape political ideologies at work?},
  series = {CESifo Working Paper},
  journal   = {CESifo Working Paper},
  number    = {10301},
  publisher = {CESifo GmbH (M{\"u}nchener Gesellschaft zur F{\"o}rderung der Wirtschaftswissenschaft)},
  address   = {M{\"u}nchen},
  issn      = {2364-1428},
  pages     = {61},
  year      = {2023},
  abstract  = {Labor unions' greatest potential for political influence likely arises from their direct connection to millions of individuals at the workplace. There, they may change the ideological positions of both unionizing workers and their non-unionizing management. In this paper, we analyze the workplace-level impact of unionization on workers' and managers' political campaign contributions over the 1980-2016 period in the United States. To do so, we link establishment-level union election data with transaction-level campaign contributions to federal and local candidates. In a difference-in-differences design that we validate with regression discontinuity tests and a novel instrumental variables approach, we find that unionization leads to a leftward shift of campaign contributions. Unionization increases the support for Democrats relative to Republicans not only among workers but also among managers, which speaks against an increase in political cleavages between the two groups. We provide evidence that our results are not driven by compositional changes of the workforce and are weaker in states with Right-to-Work laws where unions can invest fewer resources in political activities.},
  language  = {en}
}
@techreport{HerloUllrichVladova2023,
  type      = {Working Paper},
  author    = {Herlo, Bianca and Ullrich, Andr{\´e} and Vladova, Gergana},
  title     = {Sustainable digital sovereignty},
  series = {Weizenbaum series},
  volume    = {32},
  journal   = {Weizenbaum series},
  publisher = {Weizenbaum Institute for the Networked Society - the German Internet Institute},
  address   = {Berlin},
  issn      = {2748-5587},
  doi       = {10.34669/WI.WS/32},
  pages     = {39},
  year      = {2023},
  abstract  = {This study is dedicated to the interdependencies between digital sovereignty and sustainable digitalization, which need to be explicitly linked to an increasing degree in political discourse, academia, and societal debates. Digital skills are the prerequisites for shaping digitalization in the interest of society and sustainable development.},
  language  = {en}
}
@techreport{Andres2024,
  type      = {Working Paper},
  author    = {Andres, Maximilian},
  title     = {Equilibrium selection in infinitely repeated games with communication},
  series = {CEPA Discussion Papers},
  journal   = {CEPA Discussion Papers},
  number    = {75},
  issn      = {2628-653X},
  doi       = {10.25932/publishup-63180},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-631800},
  pages     = {38},
  year      = {2024},
  abstract  = {The present paper proposes a novel approach for equilibrium selection in the infinitely repeated prisoner's dilemma where players can communicate before choosing their strategies. This approach yields a critical discount factor that makes different predictions for cooperation than the usually considered sub-game perfect or risk dominance critical discount factors. In laboratory experiments, we find that our factor is useful for predicting cooperation. For payoff changes where the usually considered factors and our factor make different predictions, the observed cooperation is consistent with the predictions based on our factor.},
  language  = {en}
}
@techreport{BruttelPetrishcheva2024,
  type      = {Working Paper},
  author    = {Bruttel, Lisa Verena and Petrishcheva, Vasilisa},
  title     = {Does communication increase the precision of beliefs?},
  series = {CEPA Discussion Papers},
  journal   = {CEPA Discussion Papers},
  number    = {74},
  issn      = {2628-653X},
  doi       = {10.25932/publishup-62936},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-629367},
  pages     = {1 -- 33},
  year      = {2024},
  abstract  = {In this paper, we study one channel through which communication may facilitate cooperative behavior - belief precision. In a prisoner's dilemma experiment, we show that communication not only makes individuals more optimistic that their partner will cooperate but also increases the precision of this belief, thereby reducing strategic uncertainty. To disentangle the shift in mean beliefs from the increase in precision, we elicit beliefs and precision in a two-stage procedure and in three situations: without communication, before communication, and after communication. We find that the precision of beliefs increases during communication.},
  language  = {en}
}
@techreport{Nastasa2024,
  type      = {Working Paper},
  author    = {Nastasa, Ruxandra},
  title     = {Germany and the EU's pursuit of gender equality in peace and security},
  series = {Staat, Recht und Politik - Forschungs- und Diskussionspapiere},
  journal   = {Staat, Recht und Politik - Forschungs- und Diskussionspapiere},
  number    = {16},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  issn      = {2509-6974},
  doi       = {10.25932/publishup-62850},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-628501},
  pages     = {15},
  year      = {2024},
  abstract  = {The Women, Peace and Security Agenda (WPSA) is an international framework addressing the disproportionate impact of armed conflict on women and girls and promoting their meaningful participation in peacebuilding efforts. The Security Council called on Member States to develop National Action Plans (NAPs) to operationalize the four pillars of the Agenda. This study looks at the relevant steps undertaken by both Germany and the European Union. The author calls for improvements on either level and makes four recommendations.},
  language  = {en}
}
@techreport{BruttelEisenkopfNithammer2024,
  type      = {Working Paper},
  author    = {Bruttel, Lisa Verena and Eisenkopf, Gerald and Nithammer, Juri},
  title     = {Pre-election communication in public good games with endogenous leaders},
  series = {CEPA Discussion Papers},
  journal   = {CEPA Discussion Papers},
  number    = {73},
  issn      = {2628-653X},
  doi       = {10.25932/publishup-62395},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-623952},
  pages     = {28},
  year      = {2024},
  abstract  = {Leadership plays an important role for the efficient and fair solution of social dilemmas but the effectiveness of a leader can vary substantially. Two main factors of leadership impact are the ability to induce high contributions by all group members and the (expected) fair use of power. Participants in our experiment decide about contributions to a public good. After all contributions are made, the leader can choose how much of the joint earnings to assign to herself; the remainder is distributed equally among the followers. Using machine learning techniques, we study whether the content of initial open statements by the group members predicts their behavior as a leader and whether groups are able to identify such clues and endogenously appoint a "good" leader to solve the dilemma. We find that leaders who promise fairness are more likely to behave fairly, and that followers appoint as leaders those who write more explicitly about fairness and efficiency. However, in their contribution decision, followers focus on the leader's first-move contribution and place less importance on the content of the leader's statements.},
  language  = {en}
}
@techreport{EstrinKhavulKritikosetal.2024,
  type      = {Working Paper},
  author    = {Estrin, Saul and Khavul, Susanna and Kritikos, Alexander and L{\"o}her, Jonas},
  title     = {Access to digital finance},
  series = {CEPA Discussion Papers},
  journal   = {CEPA Discussion Papers},
  number    = {72},
  issn      = {2628-653X},
  doi       = {10.25932/publishup-62326},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-623261},
  pages     = {27},
  year      = {2024},
  abstract  = {Financing entrepreneurship spurs innovation and economic growth. Digital financial platforms that crowdfund equity for entrepreneurs have emerged globally, yet they remain poorly understood. We model equity crowdfunding in terms of the relationship between the number of investors and the amount of money raised per pitch. We examine heterogeneity in the average amount raised per pitch that is associated with differences across three countries and seven platforms. Using a novel dataset of successful fundraising on the most prominent platforms in the UK, Germany, and the USA, we find the underlying relationship between the number of investors and the amount of money raised for entrepreneurs is loglinear, with a coefficient less than one and concave to the origin. We identify significant variation in the average amount invested in each pitch across countries and platforms. Our findings have implications for market actors as well as regulators who set competitive frameworks.},
  language  = {en}
}
@techreport{MargaryanSaniterSchumannetal.2022,
  type      = {Working Paper},
  author    = {Margaryan, Shushanik and Saniter, Nils and Schumann, Mathias and Siedler, Thomas},
  title     = {Do internships pay off?},
  series = {Journal of human resources},
  volume    = {57},
  journal   = {Journal of human resources},
  number    = {4},
  publisher = {University of Wisconsin Press},
  address   = {Madison},
  issn      = {0022-166X},
  doi       = {10.3368/jhr.57.4.0418-9460R2},
  pages     = {1242 -- 1275},
  year      = {2022},
  abstract  = {We study the causal effect of student internship experience in firms on earnings later in life. We use mandatory firm internships at German universities as an instrument for doing a firm internship while attending university. Employing longitudinal data from graduate surveys, we find positive and significant earnings returns of about 6 percent in both ordinary least squares (OLS) and instrumental variables (IV) regressions. The positive returns are particularly pronounced for individuals and areas of study that are characterized by a weak labor market orientation. The empirical findings show that graduates who completed a firm internship face a lower risk of unemployment during the first year of their careers, suggesting a smoother transition to the labor market.},
  language  = {en}
}
@techreport{SteckelMissbachOhlendorfetal.2022,
  type      = {Working Paper},
  author    = {Steckel, Jan Christoph and Missbach, Leonard and Ohlendorf, Nils and Feindt, Simon and Kalkuhl, Matthias},
  title     = {Effects of the energy price crisis on European households},
  publisher = {Mercator Research Institute on Global Commons and Climate Change (MCC) gGmbH},
  address   = {Berlin},
  pages     = {30},
  year      = {2022},
  language  = {en}
}
@techreport{KalkuhlFlachslandKnopfetal.2022,
  type      = {Working Paper},
  author    = {Kalkuhl, Matthias and Flachsland, Christian and Knopf, Brigitte and Amberg, Maximilian and Bergmann, Tobias and Kellner, Maximilian and St{\"u}ber, Sophia and Haywood, Luke and Roolfs, Christina and Edenhofer, Ottmar},
  title     = {Effects of the energy price crisis on households in Germany},
  publisher = {Mercator Research Institute on Global Commons and Climate Change (MCC) gGmbH},
  address   = {Berlin},
  pages     = {35},
  year      = {2022},
  language  = {en}
}
@techreport{BlanzEydamHeinemannetal.2023,
  type      = {Working Paper},
  author    = {Blanz, Alkis and Eydam, Ulrich and Heinemann, Maik and Kalkuhl, Matthias and Moretti, Nikolaj},
  title     = {Fiscal Policy and Energy Price Shocks},
  series = {CEPA Discussion Papers},
  journal   = {CEPA Discussion Papers},
  number    = {70},
  issn      = {2628-653X},
  doi       = {10.25932/publishup-61276},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-612763},
  pages     = {33},
  year      = {2023},
  abstract  = {The effects of energy price increases are heterogeneous between households and firms. Financially constrained poorer households, who spend a larger relative share of their income on energy, are particularly affected. In this analysis, we examine the macroeconomic and welfare effects of energy price shocks in the presence of credit-constrained households that have subsistence-level energy demand. Within a Dynamic Stochastic General Equilibrium (DSGE) model calibrated for the German economy, we compare the performance of different policy measures (transfers and energy subsidies) and different financing schemes (income tax vs. debt). Our results show that credit-constrained households prefer debt over tax financing regardless of the compensation measure due to their difficulty to smooth consumption. On the contrary, rich households tend to prefer tax-financed measures as they increase the labor supply of poor households. From an aggregate perspective, tax-financed measures targeting firms effectively cushion aggregate output losses.},
  language  = {en}
}