Researchers analyzing data from the British 1946 birth cohort have found that individuals who experienced socioeconomic disadvantages in childhood exhibit worse cognitive function and accelerated decline in processing speed in later life. The study, published in the European Journal of Ageing, utilized data from the Medical Research Council National Survey of Health and Development to investigate how early life circumstances influence cognitive ageing. The primary finding indicates that lower childhood socioeconomic position is associated with lower scores on verbal memory, letter search speed, letter search accuracy, and overall cognitive state at age 69. These associations suggest that the economic and material conditions of early life have lasting effects on brain health decades later.
The study focused on a specific cohort of 5,362 individuals born in England, Scotland, and Wales in a single week in March 1946. By the time of the 24th data collection at age 69, 2,149 participants had completed home visits. The analytical samples ranged from 1,593 participants for letter search accuracy to 1,335 for cognitive state, depending on data availability. The researchers used a composite score to define childhood socioeconomic position, derived from indicators such as housing overcrowding, lack of essential household amenities, poor housing condition, and paternal occupational status. This approach allowed the team to categorize participants into groups of high or low childhood socioeconomic position based on the presence or absence of these adversities.
To assess cognitive ageing, the team employed a battery of neuropsychological tests administered at ages 53, 60 to 64, and 69. Short-term verbal memory was measured using a 15-item word learning task, where participants recalled words over three trials. Processing speed was evaluated through a visual search task requiring participants to cross out specific letters as quickly and accurately as possible within one minute. Additionally, overall cognitive state was assessed using a customized version of the Addenbrooke’s Cognitive Examination III, which covers domains such as attention, verbal fluency, memory, language, and visuospatial function. These measures provided a comprehensive view of cognitive performance across different domains and time points.
The central hypothesis of the study was to determine whether accumulative affective problems across the life course explain the association between childhood socioeconomic position and later-life cognitive ageing. Affective problems were defined as mood-related symptoms, including both subclinical symptoms and clinical disorders, measured through questionnaires at various ages. The researchers categorized these problems into case-level thresholds, distinguishing between those who never experienced them, those who experienced them once, and those who experienced them twice or more. This categorization allowed for a nuanced analysis of how the frequency and persistence of mood issues might mediate the relationship between early socioeconomic status and cognitive outcomes.
The results showed that participants with low childhood socioeconomic position were significantly more likely to have experienced affective problems once or twice or more across their lives compared to those with high childhood socioeconomic position. Specifically, the odds ratio for experiencing affective problems once was 1.37, and for twice or more, it was 1.32. Furthermore, these participants had lower scores on later-life cognitive tests. For instance, the unstandardized regression coefficient for verbal memory at age 69 was -1.87, indicating a notable decrease in performance associated with low childhood socioeconomic position. Similar negative associations were observed for letter search speed, letter search accuracy, and cognitive state, highlighting a broad impact of early disadvantage on multiple cognitive domains.
When examining cognitive decline between ages 53 and 69, the study found that low childhood socioeconomic position was associated with accelerated decline in letter search accuracy. However, an unexpected finding was that this group experienced a slower decline in verbal memory compared to those with high childhood socioeconomic position. This divergence suggests that different cognitive domains may be affected by early life socioeconomic factors in distinct ways. The researchers noted that while processing speed showed accelerated decline, verbal memory showed a more gradual trajectory, potentially due to differences in how these functions are linked to biological processes and cognitive reserve.
The mediation analysis revealed that affective problems only partially explained the association between childhood socioeconomic position and later-life cognitive function. Specifically, incidental affective problems, defined as those occurring once, accounted for 6.3% of the total effect of low childhood socioeconomic position on letter search accuracy. This marginal contribution suggests that while mood issues play a role, they are not the primary driver of the cognitive inequalities observed. The study indicates that other factors, such as educational attainment and adult socioeconomic position, may be more significant in explaining the long-term cognitive impacts of early life disadvantage.
The study design included several sensitivity analyses to test the robustness of the findings. These adjustments helped to isolate the specific effect of childhood socioeconomic position from other variables that could influence cognitive ageing. The use of inverse probability weighting was also employed to address selection bias arising from missing cognition data at age 69, ensuring that the analytical sample remained representative of the broader cohort.
Limitations of the study include the potential for selection and attrition bias, as the most healthy individuals may be more likely to participate and remain in the study. The researchers acknowledged that the association between childhood socioeconomic position and affective problems attenuated in the sample with later-life cognition data, which could lead to an underestimation of the true associations. Additionally, the composite score for childhood socioeconomic position was based on material conditions that were common in the post-World War II era, which might mitigate the impact of deprivation compared to more modern contexts. The lack of ethnic diversity in the cohort is another limitation, as previous studies have shown that ethnicity can interact with socioeconomic position to influence cognitive ageing.
In conclusion, the study provides evidence that early life socioeconomic disadvantages have a negative impact on both affective health and cognitive ageing. While improving mental health across the life course may help reduce inequalities in later-life cognitive function, the effects of childhood socioeconomic position appear to be largely independent of affective problems. The findings underscore the importance of considering life course models in research on cognitive ageing, highlighting that early life experiences set a trajectory that can persist into old age.
To trace affective health across decades, the researchers utilized different age-appropriate instruments at successive observation waves. During adolescence, at ages 13 and 15, emotional symptoms were evaluated through teacher ratings of behavior and temperament using a forerunner of the Adolescent Rutter scale, defining case-level symptoms by the 91st to 100th percentile of standardized factor scores. In adulthood, affective problems were assessed at age 36 with the short community version of the Present State Examination using a threshold score of five or higher, at age 43 with the Psychiatric Symptom Frequency scale using a cutoff score of 23 or higher, and at ages 53 and 60 to 64 using the 28-item General Health Questionnaire with a threshold of five or higher. Participants were also classified as experiencing affective problems at ages 36, 43, 53, and 60 to 64 if they reported using prescribed anxiolytic or antidepressant medications listed under the British National Formulary.
Beyond linking childhood socioeconomic position to mood disturbances, the analysis examined how affective problems directly related to cognitive performance in late life. Participants experiencing affective problems once showed significantly lower scores at age 69 on verbal memory, letter search accuracy, and overall cognitive state. Those experiencing affective problems twice or more exhibited even greater deficits across these same measures, alongside a notable deficit in letter search speed, where the unstandardized regression coefficient reached minus 14.19. However, while accumulative affective problems across the life course clearly tracked with poorer cross-sectional cognitive performance at age 69, they demonstrated no statistically significant associations with the rate of cognitive decline in verbal memory or processing speed between ages 53 and 69. Similarly, although lower childhood socioeconomic position predicted an accelerated decline in letter search accuracy, it showed no meaningful relationship with changes in letter search speed over that 16-year window.
Additional sensitivity analyses provided further clarity regarding the pathways connecting early social circumstances, emotional distress, and cognitive health. An examination of developmental timing revealed stronger associations between low childhood socioeconomic position and case-level affective problems during adolescence than during adult testing waves. When researchers adjusted for general cognitive ability using National Adult Reading Test scores as a proxy for verbal fluid intelligence, all observed associations between childhood socioeconomic position and later-life cognitive ageing attenuated to non-significance. Conversely, removing participants who took anxiolytic or antidepressant medications strengthened the associations between childhood socioeconomic adversity and cognitive ageing, as well as the link with recurrent affective problems. Furthermore, while adjusting for educational attainment, adult socioeconomic status, or childhood cognition meaningfully attenuated the relationships, controlling for cardiometabolic profiles and behavioral risk factors produced virtually no change in the associations. The authors noted that while childhood cognitive ability was treated as a mediator because early cognition cannot alter parental socioeconomic status, the models could not account for shared parental cognitive abilities that might influence both generations.
Subject of Research: Association between childhood socioeconomic position and later-life cognitive ageing
Article Title: Contribution of accumulative affective problems across the life course towards the association of childhood socioeconomic position with later-life cognitive ageing
Article References: Geraets, A., James, S.-N., Liu, Y., Richards, M., & Leist, A. (2026). Contribution of accumulative affective problems across the life course towards the association of childhood socioeconomic position with later-life cognitive ageing. European Journal of Ageing, 23(1), Article 16. https://doi.org/10.1007/s10433-026-00912-1
Image Credits: AI Generated
DOI: 10.1007/s10433-026-00912-1
Keywords: cognitive ageing, childhood socioeconomic position, affective problems, British 1946 birth cohort, MRC National Survey of Health and Development, verbal memory, processing speed, cognitive decline, life course epidemiology, socioeconomic inequalities, neuropsychological tests, mediation analysis, European Journal of Ageing, longitudinal study, early life adversity, cognitive reserve, cardiometabolic health, educational attainment, paternal occupation, housing condition
News Source: Ophelia Keating. (November 12, 2026). Childhood poverty linked to later cognitive decline. Scienmag.
