Syahputra, Y.; Ifdil, I.; Setiawati, C. L.; Yendi, F. M.; Yuliana, Y.; Tanjung, R. F.; Susiati, S. Rasch-Based DIF Analysis of Self-Harm Behaviors: Gender, Ethnicity, and Age Factors in an Indonesian Context. jou.couns.edu.res 2026, 2, 162-178.