# Moralizing partisanship when surrounded by copartisans versus in mixed company

**Authors:** Michalis Mamakos, Tessa E S Charlesworth, Eli J Finkel

PMC · DOI: 10.1093/pnasnexus/pgaf105 · PNAS Nexus · 2025-04-01

## TL;DR

The study explores how left- and right-wing users express partisan moralization on Reddit, finding differences in how they behave in like-minded and mixed company.

## Contribution

The paper introduces a novel method using word embedding models to analyze partisan moralization in different social contexts on Reddit.

## Key findings

- Left-wing users show consistent moralized partisanship in both copartisan and mixed contexts.
- Right-wing users express weaker moralized partisanship in mixed company compared to copartisan settings.
- Right-wing users show stronger partisan moralization in inherently political contexts than left-wing users.

## Abstract

Partisans tend to view their ingroup as moral and their outgroup as immoral. Here, we examine whether left-wing (LW) and right-wing (RW) Reddit users (N>1,000,000) express these partisan moralization views. Critically, we compare the rates of partisan moralization not only when users are in contexts (subreddits) of their ingroup (e.g. r/democrats, r/vegetarian, r/Conservative, r/Hunting) but also when in mixed-company contexts populated mostly by users without partisan engagement (e.g. r/Music, r/Parenting). First, we developed four word embedding models—two for the users of each political side, one based on their comments in their ingroup contexts and one based on their comments in mixed-company contexts. Then, we evaluated the words of each model on two semantic dimensions, partisanship and morality, and we examined their correlation as an indicator of the expressed partisan moralization. Our first analysis demonstrated that LW users express moralized partisanship to a similar degree when surrounded by copartisans and when in mixed company. However, the moralized partisanship expressed by RW users in mixed company is weaker than that they express among copartisans, as well as that expressed by LW users in mixed company. In a second analysis, we divided partisan contexts based on whether they are inherently political (e.g. r/democrats) or not (e.g. r/vegetarian). This second analysis revealed that RW users express moralized partisanship more strongly than LW users in inherently political contexts, but right- and left-wingers are similar in nonpolitical partisan contexts. The discussion considers potential explanations for these asymmetries.

## Full-text entities

- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

_Full body text omitted from this summary view._ Fetch the complete paper as Markdown: https://tomesphere.com/paper/PMC11983280/full.md

## Figures

2 figures with captions in the complete paper: https://tomesphere.com/paper/PMC11983280/full.md

## References

16 references — full list in the complete paper: https://tomesphere.com/paper/PMC11983280/full.md

---
Source: https://tomesphere.com/paper/PMC11983280