A Tripartite Conceptual Model of Mental Disorder: ‎Normative, Harmful, and Epistemic Criteria in the Japanese ‎Context

Abstract

The concept of mental disorder remains one of the most philosophically complex and clinically significant constructs in ‎psychiatry. Although international classification systems such as ICD-11 and DSM-5-TR provide operational definitions, ‎fundamental conceptual ambiguities persist regarding the distinction between pathology, cultural variation, and socially ‎deviant behavior. In Japan, where psychiatric practice primarily follows the ICD system and cultural context plays a central ‎role in shaping normative expectations, definitional clarity is particularly important. This article develops a strengthened ‎conceptual framework grounded in three interdependent criteria: culturally contextualized deviation, harmfulness, and ‎epistemic incomprehensibility requiring professional explanatory systems. Through theoretical analysis and integration of ‎philosophy of psychiatry, cultural psychology, and Japanese sociocultural considerations, the study proposes a refined ‎descriptive definition of mental disorder. The model clarifies the boundary between pathology and rationally intelligible ‎misconduct while maintaining compatibility with contemporary psychiatric practice.‎