Clinical Manifestations.

Area of Science:

• Neuroscience and Psychology
• Gerontology
• Psychometrics

Background:

• The Cognitive Domains and Functional Assessment Questionnaire (CDFAQ) is designed to evaluate cognitive and functional decline according to DSM-5 criteria for Neurocognitive Disorders.
• The participant version (CDFAQ-PV) is a 30-item self-report measure assessing six cognitive domains: Complex Attention, Executive Functions, Learning and Memory, Language, Perceptual-Motor, and Social Cognition.
• While the informant version (CDFAQ-IV) has been validated, the psychometric properties of the CDFAQ-PV, specifically its factor structure, require assessment.

Purpose of the Study:

• To conduct a Confirmatory Factor Analysis (CFA) on the CDFAQ-PV.
• To evaluate the fit of a proposed six-factor model aligning with DSM-5 cognitive domains.
• To assess the psychometric validity of the CDFAQ-PV for measuring cognitive function in older adults.

Main Methods:

• A sample of 377 older adults completed the CDFAQ-PV.
• Confirmatory Factor Analysis was performed using JASP software with Lavaan R Packages.
• A manual six-factor model was specified and tested for goodness-of-fit.

Main Results:

• The CFA model demonstrated significant overall fit (X² p < .001).
• Good fit indices were observed for the Standardized Root Mean Square Residual (SRMR = .065) and Goodness of Fit Index (GFI = .983).
• However, the Root Mean Square Error of Approximation (RMSEA = .073) and Comparative Fit Index (CFI = .792) fell below recommended thresholds, indicating areas for improvement.

Conclusions:

• The current six-factor model for the CDFAQ-PV shows mixed fit, with three parameters indicating good fit and two suggesting limitations.
• These preliminary findings suggest potential convergence between the CDFAQ-PV, CDFAQ-IV, and the DSM-5 cognitive domains.
• Further research with an expanded sample size is recommended to refine and validate the CDFAQ-PV's factor structure.