Development and Validation of SERR Scale for Detecting Extremism and Religious Radicalism.

Background: In line with the growing religious, political and social violence around the world, this study evaluates the psychometric properties of a new scale for Detecting Extremism and Religious Radicalism (SERR), a self-report measure of extremism and religious radicalism.

Method: Factor analyses, validity and reliability data were collected using a sample of 1985 participants from 58 different cities around Spain who self-identified as actively practicing their religion.

Results: Statistical analyses of SERR scores yielded acceptable internal consistency scores (ω > .