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Education, Occupational Environment, and Cognitive Function in Later Life.

Qiuchang Katy Cao1, Dawn C Carr2, Miles G Taylor3

  • 1Florida State University College of Social Work, Tallahassee, Florida, USA.

The Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
|March 4, 2025
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Summary

Education predicts cognitive health, but occupational exposures also play a role. Hazardous job exposures partially explain the link between education and later-life cognitive function, suggesting targeted interventions.

Keywords:
Mediation analysisOccupational complexityOccupational hazards

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Area of Science:

  • Gerontology
  • Occupational Health
  • Cognitive Science

Background:

  • Education is a strong predictor of cognitive health in older adults.
  • The extent to which occupational exposures mediate this relationship is not well understood.
  • Understanding these pathways is crucial for developing targeted interventions.

Purpose of the Study:

  • To investigate the mediating role of pre-retirement occupational exposures on the education-cognition association.
  • To quantify the proportion of the education effect on cognitive function explained by occupational hazards and complexity.

Main Methods:

  • Utilized longitudinal data from the Health and Retirement Study (HRS) linked with Occupation Information Network (O*NET) data.
  • Employed Confirmatory Factor Analysis to identify latent occupational factors (hazards, complexity).
  • Applied Structural Equation Modeling (SEM) to assess mediation pathways in adults aged 51-60 at baseline, examining cognitive function at 65+.

Main Results:

  • Education remained a significant predictor of cognitive function, even after accounting for occupational exposures.
  • Hazardous occupational exposures significantly mediated the association between education and cognitive function (a2b2=0.02, p=0.01).
  • Approximately 17% of the education effect on cognitive function was explained by hazardous occupational exposures.

Conclusions:

  • Hazardous occupational exposures partially mediate the relationship between education and cognitive function in later life.
  • Interventions reducing exposure to occupational hazards may mitigate cognitive disadvantages linked to lower education levels.
  • Findings highlight the importance of considering occupational factors in promoting cognitive aging.