The cutoff score of 15 for the Rosenberg Self-Esteem Scale (RSES) is often used as a guideline to interpret self-esteem levels. This value does not have a universally agreed-upon reference in the original validation studies conducted by Rosenberg (1965). Instead, researchers and practitioners have empirically determined this cutoff based on various studies and clinical practice to distinguish between low and moderate/high levels of self-esteem. It serves as a practical threshold for identifying individuals who may have lower self-esteem based on their RSES scores.