Background/Objective Weight stigma has significant psychological and social implications, yet studies on perspective-taking as an intervention strategy remain scarce. This study aimed to investigate the effect of perspective-taking on weight stigma among Chinese university students and examine the potential mediating role of common ingroup identity. Methods A randomized controlled experiment with 202 Chinese university students (experimental group, perspective-taking group: n = 102; control group: n = 100) was conducted. Weight stigma was measured pre- and post-intervention using the Anti-Fat Attitudes Test. The study employed a 2 × 2 mixed design with ANCOVA and mediation analysis. Results The experimental group showed significantly lower post-test weight stigma when controlling for pre-test scores (F(1, 199) = 25.69, p < .001). Perspective-taking engagement was significantly higher in the experimental group (t = 3.13, p = .002). Common ingroup identity negatively correlated with post-test weight stigma (r = -.28, p < .001) but did not significantly mediate the perspective-taking and weight stigma reduction relationship. Conclusion Perspective-taking effectively reduces weight stigma among Chinese university students, contributing to stigma reduction strategies in university settings. Further research on underlying mechanisms is warranted.
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