The Hierarchical Taxonomy of Psychopathology (HiTOP) Is Not an Improvement Over the DSM

Area of Science:

• Psychopathology
• Taxonomy Development
• Clinical Psychology

Background:

• The Hierarchical Taxonomy of Psychopathology (HiTOP) has been proposed as an alternative to existing classification systems.
• Critiques suggest HiTOP may not accurately reflect the dimensional nature of psychopathology.
• Concerns exist regarding its practical application in clinical settings.

Purpose of the Study:

• To critically evaluate the fundamental flaws of the Hierarchical Taxonomy of Psychopathology (HiTOP).
• To assess HiTOP's empirical validity and clinical utility in comparison to the Diagnostic and Statistical Manual of Mental Disorders (DSM).

Main Methods:

• Analysis of the factor-analytic approach used in HiTOP's development.
• Examination of the reliance on self-reported symptoms in descriptive classification.
• Review of empirical evidence for HiTOP's clinical outcomes.

Main Results:

• HiTOP's simple-structure factor-analytic approach inadequately represents psychopathology's dimensional space.
• Dimensional ratings and factor analysis do not resolve issues with descriptive classification based on self-reported symptoms.
• No empirical evidence supports superior clinical outcomes for HiTOP users over DSM users.

Conclusions:

• HiTOP is a factor-analytic variation of the DSM, not a significant advancement.
• The current structure of HiTOP does not represent the empirical structure of psychopathology.
• HiTOP is not yet ready for real-world clinical application due to lack of demonstrated efficacy.