Core provides centralized recruitment, screening, and standardized self-report, interview-based, and behavioral assessments to support psychiatric and mental health research. Using validated measures aligned with transdiagnostic frameworks, the Core facilitates efficient participant recruitment, high-quality data collection, and reproducible assessment procedures across studies. By providing consistent, reliable phenotyping and behavioral data, the Core accelerates research, supports multidisciplinary investigations of mood and anxiety disorders, and serves as a shared resource for investigators within LIBR and collaborating institutions.