Zero-sum beliefs tend to be asymmetrical (the others gain at one’s own expense, but not vice versa), moderated by how threatened people feel by others’ success; reassuring people about their party’s strengths eliminates asymmetric zero-sum beliefs

Roberts, R., & Davidai, S. (2021). The psychology of asymmetric zero-sum beliefs. Journal of Personality and Social Psychology, Nov 2021. https://doi.org/10.1037/pspi0000378

Zero-sum beliefs reflect the perception that one party’s gains are necessarily offset by another party’s losses. Although zero-sum relationships are, from a strictly theoretical perspective, symmetrical, we find evidence for asymmetrical zero-sum beliefs: The belief that others gain at one’s own expense, but not vice versa. Across various contexts (international relations, interpersonal negotiations, political partisanship, organizational hierarchies) and research designs (within- and between-participant), we find that people are more prone to believe that others’ success comes at their own expense than they are to believe that their own success comes at others’ expense. Moreover, we find that people exhibit asymmetric zero-sum beliefs only when thinking about how their own party relates to other parties but not when thinking about how other parties relate to each other. Finally, we find that this effect is moderated by how threatened people feel by others’ success and that reassuring people about their party’s strengths eliminates asymmetric zero-sum beliefs. We discuss the theoretical contributions of our findings to research on interpersonal and intergroup zero-sum beliefs and their implications for understanding when and why people view life as zero-sum. 

Check also Johnson, Samuel G. B., Jiewen Zhang, and Frank Keil. 2020. “Win–win Denial: The Psychological Underpinnings of Zero-sum Thinking.” PsyArXiv. April 30. https://www.bipartisanalliance.com/2020/04/winwin-denial-psychological.html

And The politics of zero-sum thinking: The relationship between political ideology and the belief that life is a zero-sum game. Shai Davidai, Martino Ongis. Science Advances Dec 18 2019, Vol. 5, no. 12, eaay3761. https://www.bipartisanalliance.com/2019/12/liberals-exhibit-zero-sum-thinking-when.html