Education differentially contributes to cognitive reserve across racial/ethnic groups

Alzheimers Dement. 2021 Jan;17(1):70-80. doi: 10.1002/alz.12176. Epub 2020 Aug 22.

Abstract

Introduction: We examined whether educational attainment differentially contributes to cognitive reserve (CR) across race/ethnicity.

Methods: A total of 1553 non-Hispanic Whites (Whites), non-Hispanic Blacks (Blacks), and Hispanics in the Washington Heights-Inwood Columbia Aging Project (WHICAP) completed structural magnetic resonance imaging. Mixture growth curve modeling was used to examine whether the effect of brain integrity indicators (hippocampal volume, cortical thickness, and white matter hyperintensity [WMH] volumes) on memory and language trajectories was modified by education across racial/ethnic groups.

Results: Higher educational attainment attenuated the negative impact of WMH burden on memory (β = -0.03; 99% CI: -0.071, -0.002) and language decline (β = -0.024; 99% CI:- 0.044, -0.004), as well as the impact of cortical thinning on level of language performance for Whites, but not for Blacks or Hispanics.

Discussion: Educational attainment does not contribute to CR similarly across racial/ethnic groups.

Keywords: cognitive aging; cognitive reserve; education; racial/ethnic differences.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Aged
  • Aged, 80 and over
  • Aging / psychology
  • Black or African American
  • Brain / diagnostic imaging
  • Cognitive Aging
  • Cognitive Reserve* / physiology
  • Educational Status*
  • Ethnicity*
  • Female
  • Hispanic or Latino
  • Humans
  • Language
  • Magnetic Resonance Imaging
  • Male
  • Memory / physiology
  • Neuropsychological Tests
  • Racial Groups*
  • White
  • White Matter / diagnostic imaging