Amanda S Bruce, John M Crespi, Dermot J Hayes, Angelos Lagoudakis, Jayson L Lusk, Darren M Schreiber, Qianrong Wu
{"title":"Differential brain activations between Democrats and Republicans when considering food purchases.","authors":"Amanda S Bruce, John M Crespi, Dermot J Hayes, Angelos Lagoudakis, Jayson L Lusk, Darren M Schreiber, Qianrong Wu","doi":"10.1017/pls.2025.2","DOIUrl":null,"url":null,"abstract":"<p><p>We measured brain activity using a functional magnetic resonance imaging (fMRI) paradigm and conducted a whole-brain analysis while healthy adult Democrats and Republicans made non-hypothetical food choices. While the food purchase decisions were not significantly different, we found that brain activation during decision-making differs according to the participant's party affiliation. Models of partisanship based on left insula, ventromedial prefrontal cortex, precuneus, superior frontal gyrus, or premotor/supplementary motor area activations achieve better than expected accuracy. Understanding the differential function of neural systems that lead to indistinguishable choices may provide leverage in explaining the broader mechanisms of partisanship.</p>","PeriodicalId":35901,"journal":{"name":"Politics and the Life Sciences","volume":" ","pages":"60-76"},"PeriodicalIF":0.0000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Politics and the Life Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1017/pls.2025.2","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Social Sciences","Score":null,"Total":0}
引用次数: 0
Abstract
We measured brain activity using a functional magnetic resonance imaging (fMRI) paradigm and conducted a whole-brain analysis while healthy adult Democrats and Republicans made non-hypothetical food choices. While the food purchase decisions were not significantly different, we found that brain activation during decision-making differs according to the participant's party affiliation. Models of partisanship based on left insula, ventromedial prefrontal cortex, precuneus, superior frontal gyrus, or premotor/supplementary motor area activations achieve better than expected accuracy. Understanding the differential function of neural systems that lead to indistinguishable choices may provide leverage in explaining the broader mechanisms of partisanship.
期刊介绍：
POLITICS AND THE LIFE SCIENCES is an interdisciplinary peer-reviewed journal with a global audience. PLS is owned and published by the ASSOCIATION FOR POLITICS AND THE LIFE SCIENCES, the APLS, which is both an American Political Science Association (APSA) Related Group and an American Institute of Biological Sciences (AIBS) Member Society. The PLS topic range is exceptionally broad: evolutionary and laboratory insights into political behavior, including political violence, from group conflict to war, terrorism, and torture; political analysis of life-sciences research, health policy, environmental policy, and biosecurity policy; and philosophical analysis of life-sciences problems, such as bioethical controversies.
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