AUTHOR= TITLE=Retraction: Examining the relationship between product market competition and Chinese firms performance: the mediating impact of capital structure and moderating influence of firm size JOURNAL=Frontiers in Psychology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2025.1675312 DOI=10.3389/fpsyg.2025.1675312 ISSN=1664-1078