• Cisłak, Aleksandra, Center for Research on Social Relations, SWPS University of Social Sciences and Humanities, Warsaw, Poland
• Cohrs, J. Christopher, Department of Psychology, Marburg University, Marburg, Germany
• Corneille, Olivier, Université catholique de Louvain, Louvain-la-Neuve
• Costa-Lopes, Rui, Institute of Social Sciences, University of Lisbon, Lisbon, Portugal
• Costello, Joseph T., School of Sport, Health and Exercise Science, University of Portsmouth, Portsmouth, United Kingdom
• Cucinella, Nicla, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy
• Curry, Oliver Scott, School of Anthropology and Museum Ethnography, University of Oxford, Oxford, United Kingdom; kindness.org, New York, NY, USA
• Curry, Oliver Scott, Research Affiliate, School of Anthropology and Museum Ethnography, University of Oxford, Oxford, United Kingdom
• Cwalina, Wojciech, Institute of Psychology, Maria Curie-Skłodowska University, Lublin, Poland
• Cypryańska, Marzena, SWPS University of Social Sciences and Humanities, Warsaw, Poland
• Czaplińsk, Szymon, Andrzej Frycz Modrzewski Kraków University, Kraków
• Czarnota-Bojarska, Joanna, University of Warsaw, Warsaw
• Czerniak, Anna, Andrzej Frycz Modrzewski Kraków University, Kraków
• Czerw, Agnieszka, SWPS University of Social Sciences and Humanities, Poznań
• Dahme, Barbara, Department of Social Psychology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany