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Advisor(s)
Abstract(s)
The Montreal Cognitive Assessment (MoCA) is a brief instrument developed for the screening of milder forms of
cognitive impairment. The present study aims to assess the construct related validity of the MoCA through the
establishment of the factorial, convergent, and discriminant related validities, and the reliability of data. In a Portuguese
sample of 830 participants, several models were tested using Confirmatory Factor Analysis. Although all tested models
showed a good fit, the six-factor model based on the conceptual model proposed by the MoCA’s authors showed a
significantly better fit. The results allowed us to establish the factorial, convergent, and discriminant validity of this
six-dimensional structure. An overall psychometric adequacy of the items, and a good reliability were also found. This
study contributes to overcome an important gap in the construct related validity of this instrument. The present findings
corroborate the six-dimensional structure of the MoCA and provide good evidence of the construct related validity.
The MoCA has proved to be an appropriate measure for cognitive screening taking into account different cognitive
domains, which will enable clinicians and researchers to use this test and its six latent dimensions to achieve a better
understanding of the individuals’ cognitive profile.
Description
Keywords
Cognitive disorders Alzheimer disease Neuropsychological test Psychometrics Validity and reliability Factor analysis
Citation
Journal of the International Neuropsychological Society, 18, 242-250