Informant bias and the invisible symptoms in childhood trauma assessment: introducing the symptom visibility-informant bias framework

Background: Assessing childhood trauma involves persistent methodological and ethical challenges. Many trauma-related symptoms are internal, developmentally shaped, or context-dependent, making them difficult to observe, report, or interpret. Assessment further relies on multiple informants whose perspectives are partial and unevenly aligned with children's lived experiences.Objective: The paper develops the Symptom Visibility-Informant Bias (SVIB) Framework for Childhood Trauma Assessment to explain how trauma-related symptoms may become visible, invisible, or misclassified across child, caregiver, teacher, clinician, researcher, and biological sources of information.Method: Using a literature-informed conceptual analytic approach, the paper synthesizes developmental, epidemiological, clinical, methodological, and ethical research on childhood trauma assessment.Results: The proposed framework identifies four interacting levels that shape trauma recognition: child-level developmental and relational factors, symptom-level visibility, informant-level vantage points, and system-level assessment conditions.Conclusion: This framework conceptualizes childhood trauma assessment as a relational and ethical visibility process, highlighting the need for multimodal, multi-informant, developmentally sensitive, and trauma-informed approaches.