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Progress in achieving quantitative classification of psychopathology.

Robert F Krueger1, Roman Kotov2, David Watson3

  • 1Department of Psychology, University of Minnesota, Minneapolis, MN, USA.

World Psychiatry : Official Journal of the World Psychiatric Association (WPA)
|September 20, 2018
PubMed
Summary

Quantitative approaches reveal psychopathology is dimensional and hierarchical, not categorical. The Hierarchical Taxonomy of Psychopathology (HiTOP) offers a data-driven classification system for improved clinical utility.

Keywords:
DSMHierarchical Taxonomy of PsychopathologyICDPsychopathologyRDoCclassificationclinical utilitydimensionsmental disordernosologypersonality

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Area of Science:

  • Psychiatry
  • Psychology
  • Data Science

Background:

  • Traditional expert-based classification systems for psychopathology have limitations.
  • Contemporary research emphasizes quantitative and empirical methods for classification.

Purpose of the Study:

  • To review progress in developing a quantitative, empirical classification of psychopathology.
  • To introduce the Hierarchical Taxonomy of Psychopathology (HiTOP) Consortium and its objectives.

Main Methods:

  • Review of substantial empirical literature on psychopathology's structure.
  • Analysis of evidence supporting dimensional and hierarchical models over categorical ones.
  • Examination of the utility of empirically derived constructs.

Main Results:

  • Evidence strongly supports a dimensional, rather than categorical, view of psychopathology.
  • Psychopathology dimensions can be organized hierarchically, from broad to specific symptom clusters.
  • This quantitative approach addresses the problem of comorbidity by modeling co-occurrence patterns.

Conclusions:

  • The dimensional and hierarchical structure of psychopathology is well-supported by empirical evidence.
  • The Hierarchical Taxonomy of Psychopathology (HiTOP) provides a clinically useful, empirically-based framework.
  • The HiTOP Consortium aims to advance research, clinical utility, and assessment tools for psychopathology.