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Construct Validity of the Montreal Cognitive Assessment (MoCA)

Published online by Cambridge University Press:  24 November 2011

Sandra Freitas ,
Mário R. Simões ,
João Marôco ,
Lara Alves  and
Isabel Santana
Sandra Freitas*
Affiliation:
Centro de Investigação do Núcleo de Estudos e Intervenção Cognitivo Comportamental (CINEICC), Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, Portugal
Mário R. Simões
Affiliation:
Centro de Investigação do Núcleo de Estudos e Intervenção Cognitivo Comportamental (CINEICC), Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, Portugal
João Marôco
Affiliation:
Psychology and Health Research Unit (UIPES) & Departamento de Estatística, ISPA – Instituto Universitário, Lisboa, Portugal
Lara Alves
Affiliation:
Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, Portugal
Isabel Santana
Affiliation:
Neurology Department of the Coimbra University Hospital & Faculty of Medicine, University of Coimbra, Coimbra, Portugal
*
Correspondence and reprint requests to: Sandra Freitas, Faculty of Psychology and Educational Sciences, University of Coimbra, Rua do Colégio Novo, Apartado 6153, 3001-802 Coimbra, Portugal. E-mail: sandrafreitas0209@gmail.com
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Abstract

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. (JINS, 2012, 18, 242–250)

Keywords

Cognitive disordersAlzheimer diseaseNeuropsychological testPsychometricsValidity and reliabilityFactor analysis
Type
Research Articles
Information
Journal of the International Neuropsychological Society , Volume 18 , Issue 2 , March 2012 , pp. 242 - 250
Copyright
Copyright © The International Neuropsychological Society 2011

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