Cohort and Period Effects as Explanations for Declining Dementia Trends and Cognitive Aging

Clouston, Sean A. P.; Terrera, Graciela Muniz; Rodgers, Joseph Lee; O'Keefe, Patrick; Mann, Frank D.; Lewis, Nathan A.; Wanstrom, Linda; Kaye, Jeffrey; Hofer, Scott M.

Abstract

Studies have reported that the age-adjusted incidence of cognitive impairment and dementia have decreased over the past two decades. Aging is the predominant risk factor for Alzheimer's disease and related dementias and for neurocognitive decline. However, aging alone cannot explain changes in the overall age-adjusted incidence of dementia. The objective of this position paper was to describe the potential for cohort and period effects in cognitive decline and incidence of dementia. Cohort effects have long been reported in demographic literature, but starting in the early 1980s researchers began reporting large historical cohort trends in cognitive function. At the same time, period effects have emerged in the form of economic factors and stressors in early and midlife that may result in reduced cognitive dysfunction. Recognizing that aging individuals today were once children and adolescents and that research has clearly noted that childhood cognitive performance are associated with old-age cognitive performance, this review proposes the need to connect these cohort effects with differences in late-life functioning.

Más información

Título según WOS: ID WOS:000673418100001 Not found in local WOS DB
Título de la Revista: POPULATION AND DEVELOPMENT REVIEW
Volumen: 47
Número: 3
Editorial: Wiley
Fecha de publicación: 2021
Página de inicio: 611
Página final: 637
DOI:

10.1111/padr.12409

Notas: ISI