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In two experimental studies, we manipulated the number of people to be sacrificed (1 to save 5 vs. 3 to save 5) and whether personalizing information about them was presented. Results provide the first evidence of how the effects of kill-save ratios and identifiability of the potential victims are contingent on one another. Specifically, this research shows that when individuating information about the potential victims is present in a trolley dilemma, participants are more reluctant to sacrifice three persons to save five than to sacrifice one person to save five. When such individuating information is not present, the acceptability of sacrificing the victims does not depend on their number.<\/jats:p>","DOI":"10.1080\/02134748.2021.1886700","type":"journal-article","created":{"date-parts":[[2021,3,24]],"date-time":"2021-03-24T07:16:56Z","timestamp":1616570216000},"page":"378-395","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Real people or mere numbers? The influence of kill-save ratios and identifiability on moral judgements (\n                    <i>\u00bfPersonas reales o meros n\u00fameros? La influencia de la proporci\u00f3n vidas sacrificadas\/vidas salvadas y la identificabilidad en los juicios morales<\/i>\n                    )"],"prefix":"10.1177","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1509-6397","authenticated-orcid":false,"given":"Rui","family":"Costa-Lopes","sequence":"first","affiliation":[{"name":"Instituto de Ci\u00eancias Sociais, Universidade de Lisboa"}]},{"given":"Andr\u00e9","family":"Mata","sequence":"additional","affiliation":[{"name":"Faculdade de Psicologia, Universidade de Lisboa"}]},{"given":"Cristina","family":"Mendon\u00e7a","sequence":"additional","affiliation":[{"name":"Faculdade de Psicologia, Universidade de Lisboa"}]}],"member":"179","published-online":{"date-parts":[[2021,5,1]]},"reference":[{"key":"bibr0001-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1177\/1948550618755873"},{"key":"bibr0002-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1016\/j.obhdp.2005.10.004"},{"key":"bibr0003-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1016\/j.cognition.2008.03.001"},{"key":"bibr0004-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1126\/science.aaf2654"},{"key":"bibr0005-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1093\/scan\/nsq011"},{"key":"bibr0006-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1037\/0033-2909.112.1.155"},{"issue":"14","key":"bibr0007-02134748.2021.1886700","first-page":"1","volume":"14","author":"Da Silva Frost A.","year":"2020","journal-title":"Journal of Pacific Rim Psychology"},{"key":"bibr0008-02134748.2021.1886700","unstructured":"De Oliveira Junior L., Thomaz C.E. (2006).\n                      Captura e Alinhamento de Imagens: Um Banco de Faces Brasileiro\n                      [Capture and alignment of images: a Brazilian faces database]. (Undergraduate Technical Report,). Department of Electrical Engineering."},{"key":"bibr0009-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.3758\/BF03193146"},{"key":"bibr0010-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1177\/1948550616647448"},{"key":"bibr0011-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1023\/A:1007740225484"},{"key":"bibr0012-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1002\/bdm.492"},{"key":"bibr0013-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1017\/S193029750000454X"},{"key":"bibr0014-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1037\/pspa0000170"},{"key":"bibr0015-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1111\/j.1551-6709.2011.01210.x"},{"key":"bibr0016-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1080\/13546783.2013.865000"},{"key":"bibr0017-02134748.2021.1886700","unstructured":"Schelling T. C. (1968). The life you save may be your own. In S. B. Chase (Ed.),\n                      Problems in public expenditure\n                      (pp. 127\u2013162). The Brookings Institution. http:\/\/hdl.handle.net\/10822\/762904"},{"key":"bibr0018-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1023\/A:1022299422219"},{"key":"bibr0019-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1016\/j.cognition.2011.01.018"},{"key":"bibr0020-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1037\/0022-3514.78.5.853"},{"key":"bibr0021-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1177\/0146167214530436"},{"key":"bibr0022-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1017\/S1930297500004022"},{"key":"bibr0023-02134748.2021.1886700","doi-asserted-by":"publisher","DOI":"10.1080\/13546783.2020.1741448"}],"container-title":["International Journal of Social Psychology: Revista de Psicolog\u00eda Social"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1080\/02134748.2021.1886700","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1080\/02134748.2021.1886700","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1080\/02134748.2021.1886700","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T07:44:02Z","timestamp":1777621442000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1080\/02134748.2021.1886700"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,5]]},"references-count":23,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2021,5]]}},"alternative-id":["10.1080\/02134748.2021.1886700"],"URL":"https:\/\/doi.org\/10.1080\/02134748.2021.1886700","relation":{},"ISSN":["0213-4748","1579-3680"],"issn-type":[{"value":"0213-4748","type":"print"},{"value":"1579-3680","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,5]]}}}