Conceptual and methodological limitations have hampered researchers' ability to establish valid, substantively meaningful, and theoretically driven self-report assessments of peer susceptibility. As a result, many assessments of peer susceptibility have been conceptualized as unidimensional and void of any theoretical underpinnings. This study presents empirical and theoretical support reconceptualizing early adolescent peer susceptibility as multidimensional. Following a review of the empirical and theoretical literature that showed support for a multidimensional model of adolescent peer susceptibility, items were constructed from memory-based techniques and focus groups. A self-report assessment that included the domains of conformity; personal control; social confidence; decision-making; assertiveness; self-derogation; and attention to social comparison was administered to 6th through 8th grade students (n=772). Results showed that high conformity was significantly associated with low personal control; high social anxiety; low assertiveness; high self-derogation; and high social comparison. The results provide empirical and theoretical support for a multidimensional model of early adolescent peer susceptibility. The results can impact how counselors and educators interact with adolescents regarding their need to self-evaluate compared to peers, create intervention programs, and evaluate individual differences based on competence. (Contains 36 references.) (JDM)