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October 11, 2025Assessment

Age-Invariance of the ICD-11 Maladaptive Trait Structure and Connections to Personality Pathology

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Older adults showed significantly lower scores in Negative Affectivity and Dissociality than younger adults, pointing to age-related differences.
The study assessed a total of 908 community dwelling adults, verifying the structure of the ICD-11 maladaptive traits across diverse age groups.
Findings suggest that the relationships between PiCD trait domains and personality pathology measures are consistent across ages, indicating stability.
The results support the accurate measurement of maladaptive traits throughout the adult lifespan, emphasizing the relevance of the ICD-11 model.

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Analysis demonstrates scalar measurement invariance of maladaptive traits in adults, highlighting implications for personality disorders.

Rossi et al. (2025) studied this question.

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