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Malthouse, Eugene, Pilgrim, Charlie, Sgroi, Daniel, Accerenzi, Michela, Alfonso, Antonio, Ashraf, Rana Umair, Baard, Max, Banerjee, Sanchayan, Belianin, Alexis, Bhattacharjee, Swagata ORCID: https://orcid.org/0009-0007-8540-474X, Bhattacharya, Mihir, Brañas-Garza, Pablo, Cárdenas, Juan-Camilo, Carriquiry, Miguel, Choi, Syngjoo, Clochard, Gwen-Jiro, Denzon, Eduardo Ezekiel, Dessoulavy-Sliwinski, Bartlomiej, Dini, Giorgio, Dong, Lu, Ertl, Antal, Exadaktylos, Filippos, Filiz-Ozbay, Emel, Flecke, Sarah Lynn, Galeotti, Fabio, Garcia-Muñoz, Teresa, Hanaki, Nobuyuki, Hollard, Guillaume, Horn, Daniel, Huang, Lingbo, İriş, Doruk, Kiss, Hubert Janos, Koch, Juliane, Kovářík, Jaromír, Kwarteng, Osbert Kwabena Boadi, Lange, Andreas, Leites, Martin, Leung, Thomas Ho-Fung, Lim, Wooyoung, Morren, Meike, Nockur, Laila, Okyere, Charles Yaw, Oudah, Mayada, Ozkes, Ali I., Page, Lionel, Park, Junghyun, Pfattheicher, Stefan, Proestakis, Antonios, Ramos, Carlos, Ramos-Sosa, Mapi, Ashraf, Muhammad Saeed, Sanjaya, Muhammad Ryan, Schwaiger, Rene, Sene, Omar, Song, Fei, Spycher, Sarah, Staněk, Rostislav, Tanchingco, Norman, Tavoni, Alessandro, te Velde, Vera, Vázquez-De Francisco, María José, Visser, Martine, Wang, Joseph Tao-Yi, Wang, Willy, Weng, Wei-Chien, Werner, Katharina, Wijayanti, Amanda, Winkler, Ralph, Wooders, John, Ying, Li, Zhen, Wei and Hills, Thomas (2026) The private solution trap in collective action problems across 34 nations. Proceedings of the national academy of sciences, 123 (12): 123 (12) e. ISSN 0027-8424