Life Course Pathways From Childhood Socioeconomic Status to Later-Life Cognition: Evidence From the Wisconsin...

Area of Science:

• Life course epidemiology
• Cognitive aging research
• Social determinants of health

Background:

• Low childhood socioeconomic status (SES) is linked to poorer cognitive function in older adults.
• Understanding the pathways from childhood SES to later-life cognition is crucial for public health.
• Life course epidemiology provides a framework to examine long-term effects of early-life conditions.

Purpose of the Study:

• To investigate how childhood SES influences cognitive function in older adulthood.
• To examine the mediating roles of adolescent scholastic performance and midlife status attainment.
• To elucidate the processes (latency and social pathways) linking early SES to later cognition.

Main Methods:

• Utilized data from the Wisconsin Longitudinal Study (WLS) cohort.
• Measured childhood SES prospectively in adolescence.
• Assessed cognitive function (memory, language/executive function) at age 72.
• Used high school test scores for adolescent scholastic performance and midlife indicators (education, income, occupation) for status attainment.

Main Results:

• Adolescent scholastic performance and midlife status attainment fully mediated the relationship between childhood SES and cognitive function at age 72.
• Adolescent scholastic performance directly predicted later-life cognition.
• Adolescent scholastic performance also indirectly influenced later-life cognition via midlife status attainment.

Conclusions:

• Findings support both latency and social pathway processes in the SES-cognition relationship.
• Interventions targeting educational and socioeconomic opportunities across the life course may promote cognitive health in aging populations.
• Emphasizes the need for social policies to support individuals from lower SES backgrounds throughout their lives.