Religiosity and Inequality-Endorsing Beliefs: A Systematic Review and Meta-analysis of Social Dominance Orientation and Right-Wing Authoritarianism

This preregistration describes a systematic review and meta-analysis conducted within the National Science Centre, Poland (NCN) PRELUDIUM-22 project (grant no. 2023/49/N/HS6/01936) on religiosity and inequality-endorsing beliefs. The review focuses on the association between religiosity and two key ideological constructs: Social Dominance Orientation (SDO) and Right-Wing Authoritarianism (RWA). In addition to estimating the overall magnitude and direction of these associations, the review will examine whether effect sizes vary as a function of gender and religious affiliation. The project is designed as a theory-driven quantitative evidence synthesis of observational research and will follow transparent, reproducible procedures for literature search, eligibility screening, data extraction, risk-of-bias assessment, and meta-analytic synthesis. The expected outcome is a rigorous and methodologically transparent synthesis clarifying whether religiosity is differentially associated with hierarchy-enhancing and authoritarian beliefs, and under which social and religious conditions these associations are stronger, weaker, or inconsistent.