Centro de Investigação do Núcleo de Estudos e Intervenção Cognitivo Comportamental (CINEICC), Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, Portugal.
J Int Neuropsychol Soc. 2012 Mar;18(2):242-50. doi: 10.1017/S1355617711001573. Epub 2011 Nov 24.
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.
蒙特利尔认知评估（MoCA）是一种专门为轻度认知障碍筛查而开发的简短工具。本研究旨在通过建立因子、收敛和判别相关的有效性以及数据的可靠性来评估 MoCA 的结构有效性。在一个由 830 名参与者组成的葡萄牙样本中，使用验证性因素分析测试了几种模型。虽然所有测试的模型都表现出良好的拟合度，但基于 MoCA 作者提出的概念模型的六因素模型显示出更好的拟合度。结果允许我们建立这个六维结构的因子、收敛和判别有效性。还发现了项目的整体心理计量学充分性和良好的可靠性。这项研究有助于克服该工具结构有效性方面的一个重要差距。目前的研究结果证实了 MoCA 的六维结构，并提供了该结构有效性的有力证据。MoCA 已被证明是一种适合认知筛查的方法，它考虑了不同的认知领域，这将使临床医生和研究人员能够使用该测试及其六个潜在维度来更好地了解个体的认知特征。
