Transdiagnostic psychopathology research requires comprehensive, lifespan coverage of psychological symptoms and function and ability: Commentary on Caspi et al. (2026).

Key Points

• The commentary emphasizes the necessity of a transdiagnostic approach to psychopathology that covers the entire lifespan.
• Reviews contemporary conceptualizations of mental health conditions based on structural models.
• Suggests including a full range of symptoms and behaviors in research.”
• Advocates for a longitudinal approach to assess psychological function and ability throughout life.
• Highlights the importance of comprehensive diagnoses for a better understanding of human experience.
• Stresses that a multidimensional perspective will enhance mental health research outcomes.