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...

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...

This paper investigates how institutional and social trust respond to crisis situations, and to what extent different kinds of trust interact in such a context. In an online survey experiment on 4,400 representative respondents from Italy, participants are exposed to a real-world flooding...

2024 was a year that saw Europe face numerous challenges, yet make significant strides in food safety. This annual report of the Alert and Cooperation Network (ACN) is an opportune moment to take stock of the evolving landscape in food and feed safety and to explore the complexity of emerging...

As Europe's closest neighbour and strategic partner, Africa shares strong ties and mutual interests with the European Union. Their partnership is evolving into a forward-looking alliance addressing critical global challenges such as climate change and clean energy transition in support of...

The well-known prisoner's dilemma shows why cooperation may be difficult to achieve even when cooperation would create value for all partners. In particular, material interests conflict because reciprocity cannot be enforced, while agents give priority to their material self-interest. This paper...

WORTH Partnership Project was funded by the European Commission under COSME, the EU Programme for the competitiveness of Small and Mediumsized Enterprises. WORTH was the sole European project where designers, SMEs, manufacturers, and tech providers worked together to develop innovative,...

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...

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,...

Human cooperation is ubiquitous and instinctive. We are among the most cooperative species on Earth. Still, research mostly focuses on why we cooperate, instead of understanding why some of us do not do so. The public goods game can be used to map human cooperation as well as to study free...

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....

This study presents a process narrative of how cooperatives emerge during periods of economic disruption. Cooperative organizations are pluralistic and embedded in existing local economic contexts. Yet, the role that such organizations play can be pronounced when economic disruption occurs in...

We analyze infinitely repeated multiplayer prisoner's dilemmas in continuous-time experiments. As the number of players changes, our design keeps the payoffs of the all-defection, all-cooperation, and unilateral- defection and -cooperation outcomes constant, thus controlling for the minimum...

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...

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...

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...