The Independent and Interactive Associations of Bilingualism and Sex on Cognitive Performance in Hispanics/Latinos of the Hispanic Community Health Study/Study of Latinos

Melissa Lamar, Adeline León, Karina Romo, Ramon A. Durazo-Arvizu, Shruti Sachdeva, Richard B. Lipton, Krista M. Perreira, Linda C. Gallo, Jianwen Cai, Tasneem Khambaty, Jessica Carrasco, Maria M. Llabre, Lisa T. Eyler, Martha L. Daviglus, Hector M. González

Research output: Contribution to journalArticle

Abstract

Sixty percent of Hispanics/Latinos are bilingual which research suggests may confer certain cognitive advantages. Female sex confers cognitive advantages in verbal learning and memory compared to male sex, regardless of race or ethnicity. Understanding the independent and interactive associations of bilingualism and sex with cognition may aid in predicting cognitive aging in Hispanics/Latinos. We examined baseline (2008-2011) data from the Hispanic Community Health Study/Study of Latinos, a multicenter, prospective community-based study. Our analyses included 6,110 males and females ≥45 years old who self-reported birth and parents' origin outside of the continental US, Spanish as their first language, and were evaluated in Spanish. Bilingualism was assessed along a Likert scale (1=only Spanish to 4=English>Spanish) for language proficiency (reading/spoken) and patterns of use (thinking/socializing). Cognitive testing included verbal learning, memory, fluency, and Digit Symbol Substitution (DSS). Linear regression models adjusted for relevant confounders, the complex survey design, and sampling weights. Participants' self-reported language proficiency was Spanish better than English, while patterns of use suggested more Spanish than English. Higher language proficiency was associated with higher performance on all cognitive indices while higher patterns of use associated with higher fluency and DSS scores (p-values<0.01). Female sex was associated with higher performance on all cognitive indices (p-values<0.05). There were no significant interactions with bilingualism (regardless of metric) by sex on cognition. For Hispanics/Latinos residing in the continental US and reporting birth and parents' origin elsewhere, bilingualism and female sex have independent cognitive benefits that are important to consider when evaluating cognitive performance.

Original languageEnglish (US)
Pages (from-to)1271-1283
Number of pages13
JournalJournal of Alzheimer's Disease
Volume71
Issue number4
DOIs
StatePublished - 2019

Keywords

  • Bilingualism
  • Hispanics/Latinos
  • cognition
  • memory
  • serial learning
  • sex differences

ASJC Scopus subject areas

  • Neuroscience(all)
  • Clinical Psychology
  • Geriatrics and Gerontology
  • Psychiatry and Mental health

Fingerprint Dive into the research topics of 'The Independent and Interactive Associations of Bilingualism and Sex on Cognitive Performance in Hispanics/Latinos of the Hispanic Community Health Study/Study of Latinos'. Together they form a unique fingerprint.

  • Cite this

    Lamar, M., León, A., Romo, K., Durazo-Arvizu, R. A., Sachdeva, S., Lipton, R. B., Perreira, K. M., Gallo, L. C., Cai, J., Khambaty, T., Carrasco, J., Llabre, M. M., Eyler, L. T., Daviglus, M. L., & González, H. M. (2019). The Independent and Interactive Associations of Bilingualism and Sex on Cognitive Performance in Hispanics/Latinos of the Hispanic Community Health Study/Study of Latinos. Journal of Alzheimer's Disease, 71(4), 1271-1283. https://doi.org/10.3233/JAD-190019