Scientific references
Quick answer: This library provides original editorial summaries of landmark personality research with official DOI and publisher links. We do not reproduce copyrighted abstracts or full text.
Published references
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Normal personality assessment in clinical practice: The NEO Personality Inventory
Paul T. Costa Jr., Robert R. McCrae (1992) — Psychological Assessment
This article discusses the use of the NEO Personality Inventory in applied settings and how normative trait measurement can support clinical and research practice. It situates the NEO within the broader Five-Factor trait framework.
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Personality trait structure as a human universal
Robert R. McCrae, Paul T. Costa Jr. (1997) — American Psychologist
This paper argues that the five-factor structure of personality appears across diverse cultures and languages, supporting the model as a broadly useful framework for describing individual differences.