This paper studies how competition between groups affects cooperation. In the control condition, pairs of subjects play an indefinitely repeated Prisoner's Dilemma game without external competition. In the treatment, two pairs compete against each other. No monetary rewards are tied to winning,...

For years, federal politicians from all established parties have categorically ruled out any cooperation with the Alternative for Germany (AfD), erecting a so-called "firewall" ("Brandmauer") against the party. Nevertheless, reports increasingly document instances where this firewall is eroding,...

Social cooperatives, which are an important pillar of the solidarity economy, have become increasingly popular and common in Hungary over the past 10 years, especially in disadvantaged settlements, where the administrative burden of public employment is outsourced to social cooperatives....

Interrelated global crises - climate change, pandemics, loss of ecosystem services and biodiversity - pose risks that demand collective solutions. Uncertainty about others' behavior, coupled with the dependence on some to take collective efforts to mitigate risks for all (e.g. conservation of...

Living organisms expend energy to sustain survival, a process which is reliant on consuming resources - termed here as the "cost of survival". In the Prisoner's Dilemma (PD), a classic model of social interaction, individual payoffs depend on choices to either provide benefits to others at a...

Experiment participants in a social dilemma game choose cooperation over defection, even though neither is more beneficial. High levels of cooperation cannot be explained by favorable labels for actions, collusion, k-level reasoning, quantal response behavior, or misplaced optimism about others'...

Gallice and Monzón (2019) present a natural environment that sustains full cooperation in one-shot social dilemmas among a finite number of self-interested agents. They demonstrate that in a sequential public goods game, where agents lack knowledge of their position in the sequence but can...

We characterize 'Games of Altruistic Cooperation' as a class of games in which cooperation leaves the individual and the group of decision-makers worse off than defection, but favors individuals outside the group. An example is climate change mitigation. In this context, we experimentally...

With the growth of the digital economy and environmental concerns, an increasing number of manufacturing firms are leveraging digitalization to advance their green innovation and sustainable development. Although previous studies have examined the impact of digitalization on green innovation,...

January 2025, for the first time in the postwar history of Germany's national parliament, a mainstream political party (the Christian Democratic Union) relied on the support of the Alternative for Germany (AfD) to pass a motion. This prompted intense public debate as many Germans worried that...

Nachdem im Deutschen Bundestag Ende Januar 2025 erstmals eine politische Mehrheit mit den Stimmen der AfD zustande kam, sind viele Deutsche besorgt, dass es bald weitergehende Kooperation mit der AfD geben könnte. Vor diesem Hintergrund untersucht unsere Studie den Stand der Brandmauer in...

Seit Jahren wird von Bundespolitikerinnen und -politikern aller etablierten Parteien eine Kooperation mit der AfD strikt ausgeschlossen - eine sogenannte "Brandmauer" zur AfD errichtet. Zugleich wird vermehrt über Fälle berichtet, in denen diese Brandmauer bröckelt und etablierte Parteien mit...

The Rwandan government emphasizes the role of cooperatives in transforming rural economies from subsistence farming to diversified commercial agriculture, including high-value export horticultural crops. The success of these cooperatives depends significantly on farmers' willingness to join and...

This study explores the dynamics of international strategic learning alliances through the lens of game theory, incorporating complexity and cooperative game theories to develop a model of organizational evolution. Using simulations and network resources, we examine 1200 cases to assess the...

International climate negotiations have so far failed to produce ambitious climate cooperation. We combine laboratory experiments with simulations to investigate the performance of two negotiation design features to address this failure: The Paris Agreement's ratchet-up mechanism, which requires...

Do large language models (LLMs) - such as ChatGPT 3.5, ChatGPT 4.0, and Google's Gemini 1.0 Pro - simulate human behavior in the context of the Prisoner's Dilemma (PD) game with varying stake sizes? This paper investigates this question, examining how LLMs navigate scenarios where...

The EU and Greenland are taking their unique partnership forward. President von der Leyen has inaugurated the EU Office in Nuuk and signed agreements totalling almost €94 million under the EU Global Gateway investment plan: €71.25 million for education and skills and €22.5 million for...

An effective way to foster cooperation is to monitor behaviour and sanction freeriding. Yet, previous studies have shown that cooperation quickly declines when sanctioning mechanisms are removed. We test if explicitly expressing trust in players' capability to maintain cooperation after the...

Sudden massive migration influxes have been a new driving force of migration increases in recent decades. These types of migration flows present potential challenges to social and economic integration. In this paper we study socioeconomic integration using controlled laboratory experiments in a...

Two consistent findings from the experimentally literature on public good games are that cooperation declines over time and cooperation is lower in countries with weak institutions. These findings, however, are primarily based on experiments in Europe, North America and Asia. There is little...

Defense spending above the NATO target of 2 percent of gross domestic product would be necessary for Europe to be able to defend itself without the protective umbrella of the United States. This is the conclusion of the new EconPol Policy Brief. European countries would have to significantly...

The prisoner's dilemma (PD) is arguably the most important model of social dilemmas, but our knowledge about how a PD's material payoff structure affects cooperation is incomplete. In this paper we investigate the effect of variation in material payoffs on cooperation, focusing on one-shot PD...

Algorithms play an increasingly important role in economic situations. These situations are often strategic, where the artificial intelligence may or may not be cooperative. We study the deter-minants and forms of algorithmic cooperation in the infinitely repeated prisoner’s dilemma. We run a...