Methodological and quantitative issues in the study of personality pathology

Area of Science:

• Psychiatry and Psychology
• Quantitative Psychology
• Clinical Psychology

Background:

• Personality disorders (PDs) present complex research challenges.
• Existing methodologies require refinement for greater accuracy and applicability.
• There is a need for advanced quantitative and methodological approaches in PD research.

Approach:

• This special issue compiles 12 invited articles focusing on key quantitative and methodological issues in PD research.
• Articles cover topics including open science practices, sampling, and addressing diagnostic concerns in minoritized populations.
• Methodological discussions include managing comorbidity, aligning research with the Research Domain Criteria, and employing longitudinal and ecological momentary assessment strategies.

Key Points:

• Best practices for open science, including the registration continuum, are discussed.
• Sampling strategies and the application of PD research to minoritized populations are critically examined.
• Recommendations are provided for response validity, factor analysis, moderator identification, and clinical trial research in PDs.

Conclusions:

• Improving the quantitative and methodological rigor of personality disorder research is essential.
• Adopting advanced approaches can enhance the reliability and validity of PD findings.
• This collection provides valuable insights for researchers seeking to advance the field of personality disorder studies.