dan new_round
Principal Investigator

Daniel Balliet

My research focuses on understanding Human Cooperation. I apply experiments, field studies, and meta-analysis to test evolutionary and psychological theories of cooperation. My work addresses issues related to (a) how people think about their interdependence in social interactions, (b) how people condition their cooperation to acquire direct and indirect benefits, and (c) understanding cross-societal variation in cooperation. I founded the Amsterdam Cooperation Lab in 2015, and I am the recipient of an ERC Starting Grant (2015-2020) and ERC Consolidator Grant (2020-2025).



Giuliana Spadaro

I am interested in conducting experimental research on prosocial and cooperative behavior. In particular, I focus on understanding the relation between institutions, trust, and cooperation among strangers. I am currently involved in the creation of a multi-disciplinary open access database that aims to capture the entire history of research on human cooperation, and I aim to apply meta-analytic methods on this rich data to contribute to the understanding of cooperation across the globe.




Kristen Syme

The core of my research interests is at the intersection of culture, mental health, and human sociality. I analyze qualitative and quantitative data and use a diverse set of research methodologies including field data, comparative cross-cultural analyses, confirmatory hypothesis testing, and exploratory research methods. I have used the Human Relations Area Files and have conducted field research with Micronesian Islanders to test evolutionary models of suicidality and conflict resolution.



stijn round
PhD Student

Leonard (Stijn) Peperkoorn

I consider my field of research, cooperation, a very important area of research as it has implications for policy makers and planners. As I learned more about social dilemma research from my colleagues, group size became my focus. Over the next four years as a PhD candidate, I will conduct new investigations on group size, work effectively with and learn from great minds within the social dilemma domain, and review the literature in meta-analytic studies.



shuxian round
PhD Student

Shuxian Jin

My research interest focuses on structural features of situations, interdependence and cooperation. Recently, I’m applying a meta-analytic method to understand how human cooperation can be influenced by structural features of social dilemmas. I will also conduct field research to investigate daily interdependence and cooperation in different ecologies.




PhD Student

Tiffany Matej

My research interest focuses on understanding (a) which social cues and evidence affect inferences individuals make about their social partners, especially in the domain of trust and cooperation, (b) how can these information be used to predict, faciliate or/and optimize partner selection, (c) how other contextual variables (i.e. interdependence, social distance) contribute to shaping cooperative behavior. In my studies, I want to apply an interdisciplinary approach, combining psychology, cognitive and computer science.



PhD Student

Ranran Li

I am interested in people’s cooperative behaviors in real-world and economic games, specifically, what kind of people and under what circumstances will people behave more cooperatively. The former helps identify those people, whereas the latter helps stimulate cooperation in the applied settings. I wish to contribute to the game-based personality assessment by incorporating cooperative game tasks. In addition to experimental studies, I’m keen on learning new research paradigms like computational modeling, social network analysis, etc.



PhD Student

Selene Baez

I am a student under the Spinoza Prize project “Understanding Language by Machines”. My research focuses on trust, explicitly investigating how robots could navigate the real world and form complicated relationships with people just like we do. My work aims to create and evaluate a computational model of trust, from a robot’s perspective towards trusting humans in collaborative tasks. For this, I apply complementary Artificial Intelligence techniques (from Machine Learning and Natural Language Processing to Symbolic Knowledge Representation).



junhui round
Junhui Wu: Postdoc – Beijing Normal University
angelo round
Angelo Romano: Postdoc – Leiden University
Fabiola new round
Fabiola Gerpott: Full Professor – WHU – Otto Beisheim School of Management


jan round
Jan Pletzer: Assistant Professor – Erasmus Universiteit Rotterdam
catherine round
Catherine Molho: Research Fellow – Institute for Advanced Study in Toulouse
Simon Columbus: Postdoc – University of Copenhagen



van lange_round
Paul Van Lange: Full Professor
de dreu_round
Carsten De Dreu: Full Professor
Simon Gaechter: Full Professor
Toshio Yamagishi Full Professor
Francesca Righetti: Assistant Professor
Joshua Tybur: Associate Professor
Isa round
Isabel Thielmann: Post-Doc
Piek Vossen: Full Professor
Reinout de Vries: Full Professor
Ilaria Tiddi: PostDoc
Terence das Dores Cruz: PhD Student
Annika round
Annika Nieper: PhD Student
bela round
Bela Rinderu: Brand and Cross-media Scientist
olmo round
Olmo van den Akker: PhD Student
caroline round
Caroline Graf: PhD Student
mingliang round
Mingliang Yuan: PhD Student
Eleanor Lieberman: Performance Measurement and Evaluation Fellow