<![CDATA[This study examines the psychological mechanisms underlying Muslim identity expression in Indonesia by distinguishing between identity consolidation and identity mobilization. Participants were 479 Indonesian Muslims (aged 17–60 years) who completed an online self-report questionnaire through convenience and snowball sampling. Muslim identity expression was measured using the Muslim Identity Expression Scale; attachment and glorification with the Group Identification Scale; Islamic totalism with the Religious Intensity Scale; and interreligious contact with the Interfaith Contact Scale. Data were analyzed using hierarchical multiple regression, with organizational affiliation as a control variable. The full model explained 59.9% of the variance in identity consolidation, R² = .599, F(6, 472) = 117.29, p < .001, and 49.7% in identity mobilization, R² = .497, F(6, 472) = 77.64, p < .001. Attachment significantly predicted consolidation (β = .119, p < .01) but not mobilization, whereas glorification significantly predicted mobilization (β = .189, p < .001) but not consolidation. Islamic totalism significantly predicted both outcomes, with a stronger association for consolidation (β = .614) than mobilization (β = .510). Interreligious contact positively predicted consolidation (β = .164, p < .001) and negatively predicted mobilization (β = −.094, p < .01). This study contributes to social identity performance theory by providing empirical evidence that consolidation and mobilization are driven by distinct psychological mechanisms, extending prior accounts that have treated these functions as interchangeable. It further advances intergroup contact theory by demonstrating that interreligious contact does not uniformly suppress identity expression, but reshapes its form — reinforcing cultural consolidation while reducing political mobilization. Practically, these findings suggest that interfaith and pluralism-oriented programs may effectively reduce political religious mobilization without threatening everyday cultural expressions of Muslim identity, offering a targeted approach to promoting intergroup harmony in pluralistic societies.]]>
