Climate change is currently one of humanity's greatest threats. To help scholars understand the psychology of climate change, we conducted an online quasi-experimental survey on 59,508 participants from 63 countries (collected between July 2022 and July 2023). In a between-subjects design, we tested 11 interventions designed to promote climate change mitigation across four outcomes: climate change belief, support for climate policies, willingness to share information on social media, and performance on an effortful pro-environmental behavioural task. Participants also reported their demographic information (e.g., age, gender) and several other independent variables (e.g., political orientation, perceptions about the scientific consensus). In the no-intervention control group, we also measured important additional variables, such as environmentalist identity and trust in climate science. We report the collaboration procedure, study design, raw and cleaned data, all survey materials, relevant analysis scripts, and data visualisations. This dataset can be used to further the understanding of psychological, demographic, and national-level factors related to individual-level climate action and how these differ across countries.

Academic and Research Laboratory of Neurotechnology Ural Federal University Ekaterinburg 620075 Russia

Amazon Seattle 98109 USA

Amsterdam School of Communication Research University of Amsterdam Amsterdam 1018WV The Netherlands

Anderson School of Management University of California Los Angeles Los Angeles 90095 USA

Andlinger Center for Energy and the Environment Princeton University Princeton 8544 USA

Baruch Ivcher School of Psychology Reichman University Herzliya 4610101 Israel

Behavioral Economics and Engineering Group KU Leuven Leuven 3000 Belgium

Behavioural Science Institute Radboud University Nijmegen 6500 HE the Netherlands

Behavioural Science Institute Radboud University Nijmegen 6500 HE The Netherlands

Center for Computational Psychiatry Icahn School of Medicine at Mount Sinai New York 10029 USA

Center for Earth System Research and Sustainability University of Hamburg Hamburg 20146 Germany

Center for Health and Biological Sciences Mackenzie Presbyterian University São Paulo 01221 040 Brazil

Center for Neural Science New York University; New York University New York 10003 USA

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Center for Social and Cultural Psychology Université libre de Bruxelles Brussels 1050 Belgium

Center for Social and Cultural Psychology Université libre de Bruxelles Brussels 1312 Belgium

Center for Sociocultural Research HSE University Moscow 101000 Russia

Centre for Human Brain Health School of Psychology University of Birmingham Birmingham B15 2TT UK

Centre for the Advanced Study of Collective Behaviour University of Konstanz Konstanz 78464 Germany

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College of Management National Kaohsiung University of Science and Technology Kaohsiung 800 Taiwan

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Craig Newmark Center for Journalism Ethics and Security Columbia University New York 10018 USA

Danish Research Institute of Translational Neuroscience Aarhus University Aarhus 8000 Denmark

Deparment of Economics American University of Sharjah Sharjah 26666 UAE

Département d'études cognitives Institut Jean Nicod ENS EHESS PSL University CNRS Tokyo 113 8654 Japan

Department of Bioethics El Bosque University Bogotá DC Colombia

Department of Biomedical Engineering Ulsan National Institute of Science and Technology Ulsan 44919 Republic of Korea

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Department of Civil and Water Resources Engineering School of Engineering and Technology Sokoine University of Agriculture Morogoro Tanzania

Department of Clinical Neuroscience Division of Psychology Karolinska Institutet Stockholm 171 77 Sweden

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Department of Cognition Emotion and Methods in Psychology Faculty of Psychology University of Vienna Vienna 1010 Austria

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Department of Collective Behaviour Max Planck Institute of Animal Behavior Konstanz 78464 Germany

Department of Communication Amsterdam School of Communication Research University of Amsterdam Amsterdam 1018WV The Netherlands

Department of Communication Science University of Amsterdam Amsterdam 1001 NG the Netherlands

Department of Communication Science Vrije Universiteit Amsterdam Amsterdam 1081HV The Netherlands

Department of Developmental Personality and Social Psychology Ghent University Gent 9000 Belgium

Department of Developmental Psychology and Socialisation University of Padova Padua 35131 Italy

Department of Economic Psychology Social Psychology and Experimental Methods Leuphana University Lüneburg Lüneburg 21335 Germany

Department of Economics and Business Universitat Pompeu Fabra Barcelona 8005 Spain

Department of Economics University of Hamburg Hamburg 20146 Germany

Department of Economics University of Hamburg Hamburg 20146 Hamburg Germany

Department of Environmental Conservation University of Massachusetts Amherst Amherst 1003 USA

Department of Environmental Social Sciences Stanford University Stanford 94305 USA

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Department of Humanities and Social Sciences Climate and Energy Policy Research Lab Indian Institute of Technology Kanpur Kanpur 208016 India

Department of Learning and Instructional Sciences University of Haifa Haifa 3498838 Israel

Department of Management Aarhus University Aarhus 8210 Denmark

Department of Management and Engineering Linköping University Linköping 58183 Sweden

Department of Management and Marketing University of Melbourne Melbourne 3010 Australia

Department of Management Prague University of Economics and Business Prague 13067 Czech Republic

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Department of Personality Psychology Yerevan State University Yerevan 0025 Armenia

Department of Philosophy Macquarie University Sydney 2000 Australia

Department of Philosophy Macquarie University Sydney 2109 Australia

Department of Political Science and Annenberg School for Communication University of Pennsylvania Philadelphia 19104 USA

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Department of Psychobioloogy and Methodology of Heath Sciences Universitat Autònima de Barcelona Barcelona 8193 Spain

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Department of Psychological and Behavioural Science London School of Economics and Political Science London WC2A 2AE UK

Department of Psychology and Behavioural Sciences Aarhus University Aarhus 8000 Denmark

Department of Psychology and Dyson School of Applied Economics and Management Cornell University Ithaca 14850 USA

Department of Psychology and Neuroscience and Society Sapienza University of Rome and Italian Institute of Technology Rome 179 Italy

Department of Psychology and Neuroscience University of Colorado Boulder Boulder 80309 USA

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Department of Psychology and Swiss Center for Affective Sciences University of Geneva Geneva 1205 Switzerland

Department of Psychology Carl von Ossietzky University of Oldenburg Oldenburg 26129 Germany

Department of Psychology Cornell University Ithaca 14850 USA

Department of Psychology Division of Behavioral and Organizational Sciences Claremont Graduate University Claremont 91711 USA

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Department of Psychology Faculty for Social and Educational Sciences Norwegian University of Science and Technology Trondheim 7491 Norway

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Department of Psychology Sapienza University of Rome Rome 185 Italy

Department of Psychology Seton Hall University South Orange 7079 USA

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Digital Data and Design institute at Harvard Harvard University Allston 2134 USA

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Doctoral School of Social Sciences Nicolaus Copernicus University Toruń 87 100 Poland

Environmental Psychology Department of Cognition Emotion and Methods in Psychology Faculty of Psychology University of Vienna Vienna A 1010 Austria

Erasmus School of Law Erasmus University Rotterdam Rotterdam 3062PA The Netherlands

Escuela de Psicología Pontificia Universidad Católica de Chile Santiago 8331150 Chile

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Faculty of Psychology University of Basel Basel 4055 Switzerland

Faculty of Psychology University of Warsaw Warsaw 00 183 Poland

Faculty of Science and Engineering Waseda university Tokyo 1658555 Japan

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Faculty of Social Sciences Psychology Tampere University Tampere FI 33014 Finland

Faculty of Social Sciences Tampere University Tampere 33100 Finland

Fonds de la Recherche Scientifique Brussels 1050 Belgium

Graduate School of Education Tohoku University Sendai 9808576 Japan

Green Dock Hostivice 25301 Czech Republic

Harvard Business School Harvard university Boston 2163 USA

Harvard Business School Harvard University Boston 2163 USA

HEI Lab Digital Human Environment Interaction Labs Lusófona University Lisbon 1700 Portugal

HEI Lab Digital Human Environment Interaction Labs Lusófona University Lisbon Portugal

Institut Jean Nicod Département d'études cognitives ENS EHESS PSL University CNRS Paris 75005 France

Institute for Advanced Study in Toulouse Toulouse 31000 France

Institute for Management and Organization Leuphana University Lüneburg Lüneburg 21335 Germany

Institute for Rebooting Social Media Harvard University Cambridge 02138 USA

Institute for Resources Environment and Sustainability University of British Columbia Vancouver V6T 1Z4 Canada

Institute for Sociology of the Slovak Academy of Sciences Slovak Academy of Sciences Bratislava 81364 Slovakia

Institute for the Study of Power Crime and Society | Department of Law and Criminology Royal Holloway University of London Egham TW200EX United Kingdom

Institute of European Studies and International Relations Faculty of Social and Economic Sciences Comenius University Bratislava Bratislava 82105 Slovakia

Institute of Management and Organization Leuphana University Lueneburg Lueneburg 21337 Germany

Institute of Management and Organization Leuphana University Lüneburg Lüneburg 21335 Germany

Institute of Management and Organization Leuphana University of Lüneburg Lueneburg 21337 Germany

Institute of Medical Psychology and Behavioral Neurobiology University of Tuebingen Tuebingen 72076 Germany

Institute of Pedagogy Faculty of Historical and Pedagogical Sciences University of Wroclaw Wroclaw 50 120 Poland

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Institute of Psychology SWPS University Warsaw 03 815 Poland

Institute of Psychology University of Lausanne Lausanne 1015 Switzerland

Institute of Psychology University of Silesia in Katowice Katowice 40 007 Poland

Institute of Security and Global Affairs Leiden University The Hague 2511DP The Netherlands

INVEST Research Flagship University of Turku Turku 20014 Finland

IRCCS Santa Lucia Foundation Rome 142 Italy

Japan Society for the Promotion of Science Tokyo 1020083 Japan

Jigsaw Google New York 10011 USA

John E Walker Department of Economics Clemson University Clemson 29634 USA

Kellogg School of Management Northwestern University Evanston 60208 USA

Kenya Marine and Fisheries Research Institute Kisumu 1881 40100 Kenya

Kieskompas Election Compass Amsterdam 1052XH The Netherlands

Laboratorio de Neurociencia Escuela de Negocios Universidad Torcuato Di Tella Buenos Aires C1428 Argentina

Laboratorio de Neurociencia Escuela de Negocios Universidad Torcuato Di Tella Buenos Aires C1428 CABA Argentina

Laboratory of Interdisciplinary Space Studies School for Environmental and Social Studies Tyumen State University Tyumen 625003 Russian Federation

LAPCOS Université Côte d'Azur Nice 6357 France

LMU Munich School of Management LMU Munich Munich 80539 Germany

LP3C Université Rennes 2 Rennes 35000 France

Macedonian Academy of Sciences and Arts Skopje 1000 North Macedonia

Management and Organizations Stephen M Ross School of Business University of Michigan Ann Arbor 48105 USA

Marketing Bocconi University Milan 20136 Italy

MIT Sloan School of Management Massachusetts Institute of Technology Cambridge MA 2139 USA

National Fisheries Resources Research Institute Jinja Uganda

Nencki Institute of Experimental Biology Polish Academy of Sciences Warsaw 02 093 Poland

Norwegian School of Economics Bergen Norway

Penn Center for Neuroaesthetics University of Pennsylvania Philadelphia 19104 USA

Policy Research Department Kyiv School of Economics Kyiv 2000 Ukraine

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Psychological Science Pomona College Claremont 91711 USA

Psychology and Neuroscience; Schiller Institute for Integrated Science and Society Boston College Brighton 2135 USA

Psychology of Sustainability and Behavior Change University of Basel Basel 4055 Switzerland

Psychology Scientific Research Institute Baku Azerbaijan

Psychosocial Science University of Bergen Bergen 5007 Norway

Research Center for Digital Transformation Leuphana University Lüneburg Lüneburg 21335 Germany

Research Centre for Environmental Economics Heidelberg University Heidelberg 69115 Germany

Research Centre for Greenhouse Gas Innovation University of São Paulo São Paulo 05508 030 Brazil

Research Department The South Ural University of Technology Chelyabinsk 454052 Russian Federation

Royal Holloway University of London Egham TW200EX United Kingdom

San Luis Obispo 93405 USA

Santa Lucia Foundation IRCCS Rome 185 Italy

School of Business and Creative Industries University of the Sunshine Coast Queensland 4556 Australia

School of Business and Management Queen Mary University of London; London E1 4NS London United Kingdom

School of Business International University Vietnam National University Ho Chi Minh City Ho Chi Minh City 700000 Vietnam

School of Computing Engineering and Mathematical Sciences La Trobe University Melbourne Melbourne 3086 Australia

School of Culture and Society Interacting Minds Centre Aarhus University Aarhus 8000 Denmark

School of Economics and Finance University of St Andrews St Andrews KY16 9AJ UK

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School of Global Studies Thammasat University Bangkok 12121 Thailand

School of Management Canadian University Dubai Dubai 117781 UAE

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School of Psychology and Sport Science Anglia Ruskin University Cambridge CB1 1PT UK

School of Psychology Deakin University Geelong 3216 Australia

School of Psychology Speech and Hearing University of Canterbury Christchurch 8051 New Zealand

School of Psychology Speech and Hearing University of Canterbury University of Canterbury Christchurch 8051 New Zealand

School of Psychology University of Auckland Auckland 1010 New Zealand

School of Psychology University of Birmingham Birmingham B15 2TT UK

School of Psychology University of Sussex Falmer BN1 9RH UK

School of Psychology University of Sussex Falmer BN19QH United Kingdom

School of Public Policy and Urban Affairs Northeastern University Boston 02115 USA

Shamir Research Institute University of Haifa Haifa 3498838 Israel

Social and Cognitive Neuroscience Laboratory Mackenzie Presbyterian University Sao Paulo 1241001 Brazil

Swedish National Data Service Gothenburg University Gothenburg 41390 Sweden

Swiss Center for Affective Sciences University of Geneva Geneva 1205 Switzerland

Tanzania Fisheries Research Institute Mwanza Tanzania

Tanzanian Fisheries Research Institute Mwanza Tanzania

Toulouse Business School Toulouse 31000 France

Universidad Peruana Cayetano Heredia; San Martín de Porres Lima 15102 Peru

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