When is development disordered? Developmental psychopathology and the harmful dysfunction analysis of mental disorder

Area of Science:

• Developmental psychopathology
• Clinical psychology
• Philosophy of science

Background:

• Understanding the origins and progression of mental disorders is a key objective in developmental psychopathology.
• A precise conceptualization of 'disorder' is essential for advancing this field.

Purpose of the Study:

• To propose the "harmful dysfunction" analysis as a valid conceptual framework for understanding mental disorder.
• To demonstrate how this analysis aligns with the core tenets of developmental psychopathology.

Main Methods:

• Conceptual analysis of the term "disorder" in psychopathology.
• Examination of the "harmful dysfunction" model, defining disorder as a harmful failure of an internal mechanism's natural function.
• Comparison of the "harmful dysfunction" model with other criteria like developmental deviation and predictive validity.

Main Results:

• The "harmful dysfunction" analysis provides a robust definition of disorder.
• This framework explains the relevance of developmental psychopathology's unique approaches to studying mental disorders.
• The analysis is presented as a necessary complement to existing criteria for disorder.

Conclusions:

• The "harmful dysfunction" analysis offers a scientifically grounded and socially relevant definition of mental disorder.
• This conceptualization is vital for the continued progress of developmental psychopathology.
• Integrating this analysis enhances the validity of research into the origins and course of mental disorders.