Stress
How social status and stress shape racial cognitive gaps
Open access · cc by · source: Europe PMC
Lower socioeconomic status and higher stress explain some of the cognitive differences seen between Black and White young adults, but these pathways differ for Hispanic young adults.
Key findings
Black and Hispanic participants reported higher stress levels than White participants, while Black participants had lower average socioeconomic status (SES). Parallel and sequential mediation analyses showed that for Black participants, lower SES was linked to higher chronic stress, which in turn predicted lower performance on memory and executive function tasks. For Hispanic participants, stress directly mediated cognitive performance, but SES did not play a significant role. On a working memory task, higher SES acted as a buffer, protecting both Black and Hispanic participants from stress-related cognitive drops.
Methodology
Researchers analyzed existing health and cognitive data from 970 young adults in Missouri. They measured participants' perceived stress using a 10-item questionnaire, and calculated socioeconomic status based on education and household income. Participants also completed several cognitive tasks on an iPad or in an fMRI scanner to assess processing speed, memory, and executive function.
Limitations
The study is cross-sectional, meaning it cannot prove that low SES and stress actually cause cognitive differences over time. The sample was not nationally representative, as all participants lived in Missouri, which limits generalizability. Additionally, the researchers grouped Black and Hispanic participants into broad categories, ignoring cultural and regional diversity within these groups. Finally, stress and SES did not fully explain the cognitive differences, meaning other unmeasured systemic factors likely play a role.
How this study connects
Role on claims
Each row is a claim on a concept or method page where this paper supports, challenges, or qualifies the statement. Roles are hand-checked — not a model guess.
Socioeconomic status serves as a protective buffer that shields individuals from stress-related drops in working memory performance.
Evidence for the claim as stated.
The exact pathways linking socioeconomic status, stress, and cognitive outcomes are not uniform and vary across different ethnoracial and demographic groups.
Evidence for the claim as stated.
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