This academic year we started analysing the results from ALFA cohort. We develop a statistical analysis plan that included four steps: 1) Principal Component Analysis of Language measures (Proficiency, Age of acquisition and frequency of use of Catalan and Spanish); 2) K-means clustering of the PCA results to create groups based on Language profiles; 3) Analysis of the Variance (ANOVA) of sociodemographic and language measures of the groups obtained in the k-means clustering and 4) An Analysis of Covariance (ANCOVA) with multiple covariates was conducted to examine the effects of language profile clusters (3 levels) and the language of assessment (Catalan or Spanish), controlling for age, years of education, sex, and adjusted cognitive reserve score, on 13 neuropsychological test scores: (1) MMSE, (2) Semantic Fluency, (3) MBT Total Free Recall, (4) MBT Total Paired Recall, (5) MBT Total Delayed Paired Recall, (6) MBT Total Delayed Free Recall, (7) WAIS-IV Coding, (8) WAIS-IV Matrix Reasoning, (9) WAIS-IV Visual Puzzles, (10) WAIS-IV Digits Total Score, (11) Digits Direct Span, (12) Digits Indirect Span, and (13) Digits Sequential Span.
We are in the process of writing a manuscript based on these results that will be the first article of my thesis. In the process we intend to present this results as posters in several congress:
- FANPSE: Annual congress of neuropsychology in Spain (Madrid)
- ISB15: biannual symposium of bilingualism (San Sebastian)
- AAIC25: Most important conference of Alzheimer’s disease in the world (Toronto).
- FESN25: Annual European congress of neuropsychology (Leipzig)
The next step after publishing the article measuring the cognitive impact of bilingualism in healthy senior adults is to analyse neuroimaging results. We have structural, morphological and functional Magnetic Resonance Image data of a subsample of the ALFA cohort (ALFA+) already pre-processed and structured ready for the analysis. We will first study each neuroimaging result separately and then integrate the three methodologies using a Multilayer Network Analysis based on Casas-Roma et al., (2022)
Debatcontribution 0el Oral presentation at Speech Prosody 2024 (Leiden, July 2-6, 2024)
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