BackgroundThe Montreal Cognitive Assessment (MoCA) is a common tool for the assessment of global cognition in older adults. Despite its popularity among clinicians and researchers, the test's psychometric properties are still uncertain.
ObjectiveTo examine fundamental psychometrics properties of the MoCA that have not been established so far (i.e., factorial structure, general factor saturation, and measurement invariance).
DesignCohort study.
SettingPopulation-based invitation-type survey in city and rural areas in Hyogo prefectures and Tokyo Metropolitan, Japan.
SubjectsIndividuals (N = 2,408) aged 69 to 91 clustered in three cohorts (69-71-year-olds, 79-81year-olds, and 89-91-year-olds).
Methods
Exploratory Factor Analysis and Confirmatory Factor Analysis.
ResultsThe MoCA shows an overall stable hierarchical factorial structure and a satisfactory general factor saturation. Also, measurement invariance occurs across participants with different age, educational level, economic status, and gender.
ConclusionThis comprehensive investigation upholds the idea that the MoCA is a psychometrically valid tool for the assessment of global cognition in older adults.
Key points The Montreal Cognitive Assessment (MoCA) is a common test for evaluating global cognition in older adults.
PSYCHOMETRICS OF THE MOCA The MoCA has never undergone a thorough analysis to test its psychometric properties. The study evaluates the test's dimensionality, factorial structure, general factor saturation, and invariance. The results show that the test's items perform well in all the analyses. The MoCA is thus a reliable tool for assessing global cognition in older adults.