Group differences in broadness of values may drive dynamics of public opinion on moral issues |
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| Institution: | 1. Centre for the Study of Cultural Evolution, Stockholm University, SE-106 91 Stockholm, Sweden;2. School of Education, Culture and Communication, Mälardalen University, SE-721 23 Västerås, Sweden;3. Institute for Analytical Sociology, Linköping University, SE-581 83 Linköping, Sweden;1. Institut de Statistique, Biostatistique et Sciences Actuarielles, UCLouvain;2. Demography, UCLouvain;1. Department of Clinical Pathology and Clinical Genetics, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden;2. Department of ENT – Head and Neck Surgery, County Council of Östergötland, Linköping, Sweden;3. Division of Cell Biology, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden;4. Department of Oncology – Pathology, Cancer Centrum Karolinska (CCK), Karolinska Institutet, Stockholm, Sweden;5. Division of Oto-Rhino-Laryngology and Head and Neck Surgery, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden |
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| Abstract: | Here we propose the idea that the success of an argument in favor of an issue position should depend on whether the argument resonates with the audience’s values. Now consider two groups, one of which has a broader set of values than the other. We develop a mathematical model to investigate how this difference in broadness of values may drive a change on the population level towards positions in line with the more narrow set of values. The model is motivated by the empirical finding that conservative morality rests equally on moral foundations that are individualizing (harm and fairness) and binding (purity, authority, and ingroup), whereas liberal morality relies mainly on the individualizing moral foundations. The model then predicts that, under certain conditions, the whole population will tend to move towards positions on moral issues (e.g., same-sex marriage) that are supported by individualizing moral foundations. |
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