I couldn't find anything on it at all so if you got a link that would be great. However I did find this in America:
https://www.asc.upenn.edu/news-events/news/new-study-reveals-democrats-and-republicans-vastly-underestimate-diversity-each-others-views
According to a new study by researchers at the Annenberg School for Communication at the University of Pennsylvania, both Democrats and Republicans significantly underestimate the diversity of policy attitudes within their own party and among the opposing party. This discovery challenges existing beliefs about polarization and suggests that reducing these misperceptions could ease political tensions
However I did type your study into chat gpt and found:
1. The study’s framing and audience matters
The visuals (cluster heatmaps) were interpreted as representing ideological coherence vs. dispersion but it’s not a global psychological fact; it's a statistical pattern in survey data, across specific issues.
It reflects network modeling of opinions—
not a universal measurement of cognitive diversity or flexibility2. “Diversity of thought” is hard to define
Psychological research distinguishes between ideological conformity (e.g., groupthink), moral complexity, epistemic openness, and intragroup disagreement.
Other large reviews suggest that both liberals and conservatives are more similar than different in many psychological domains, with nuanced differences in motivation, cognition, and affect
3. Forward and backward bias in interpretation
Online commentary interpreting the study—especially from ideologically aligned blogs or commentators—often exaggerates the findings to support broader claims about intellectual diversity or laziness on one side.
Broader literature shows ideological clustering on both ends
Research on group polarization, echo chambers, and ideological homophily shows that both left and right can exhibit strong internal agreement and resistance to dissent, depending on issue
Scholars like Jonathan Haidt have pointed to a lack of political diversity within academic social psychology itself, especially on the left, which may distort perspective
This study is one data point, interesting for modeling opinion clusters.
It shows that, on certain issues, self-identified right-wing individuals displayed a broader spread of responses than left-wing individuals in that sample.
But it
does not show that conservatives are generally more ideologically flexible, nor that liberals lack independent thought at scale.
...
Dunno if that's your study couldn't find nothing though chatgpt seems to have found something similar.
