Cohort Changes and Sex Differences After Age 50 in Cognitive Variables in the English Longitudinal Study of Ageing

Patrick O’Keefe, Graciela Muniz-Terrera, Stacey Voll, Sean Clouston, Linda Wanström, Frank D Mann, Joseph Lee Rodgers, Scott M Hofer and Shevaun Neupert

The Journals of Gerontology: Series B, 2023, vol. 78, issue 10, 1636-1641

Abstract: ObjectivesThis paper models cognitive aging, across mid and late life, and estimates birth cohort and sex differences in both initial levels and aging trajectories over time in a sample with multiple cohorts and a wide span of ages.MethodsThe data used in this study came from the first 9 waves of the English Longitudinal Study of Ageing, spanning 2002–2019. There were n = 76,014 observations (proportion male 45%). Dependent measures were verbal fluency, immediate recall, delayed recall, and orientation. Data were modeled using a Bayesian logistic growth curve model.ResultsCognitive aging was substantial in 3 of the 4 variables examined. For verbal fluency and immediate recall, males and females could expect to lose about 30% of their initial ability between the ages of 52 and 89. Delayed recall showed a steeper decline, with males losing 40% and females losing 50% of their delayed recall ability between ages 52 and 89 (although females had a higher initial level of delayed recall). Orientation alone was not particularly affected by aging, with less than a 10% change for either males or females. Furthermore, we found cohort effects for initial ability level, with particularly steep increases for cohorts born between approximately 1930 and 1950.DiscussionThese cohort effects generally favored later-born cohorts. Implications and future directions are discussed.

Keywords: Cohort shifts; ELSA; Flynn effect (search for similar items in EconPapers)
Date: 2023
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