ArticlePopulation and development review2021
Cohort and Period Effects as Explanations for Declining Dementia Trends and Cognitive Aging.
Article in Population and development review, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
16 citing papers in PubMed.
- Cognitive Aging in the Context of the Housing Crisis: Trends and Evidence From the Health and Retirement Study.Canadian studies in population · 2026Article
- Age-related decline in thickness and surface area in the cortical surface and hippocampus: lifespan trajectories and decade-by-decade analyses.GeroScience · 2024Article
- The Flynn effect and cognitive decline among americans aged 65 years and older.Psychology and aging · 2024Article
- Inequalities in accelerated cognitive decline: Resolving observational window bias using nested non-linear regression.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024Article
- New Evidence of Healthier Aging: Positive Cohort Effects on Verbal Fluency.Innovation in aging · 2024Article
- Cohort Changes and Sex Differences After Age 50 in Cognitive Variables in the English Longitudinal Study of Ageing.The journals of gerontology. Series B, Psychological sciences and social sciences · 2023Article
- Five-Factor Model Personality Domains and Facets Associated with Markers of Cognitive Health.Journal of individual differences · 2023Article
- It Runs in the Family: Testing for Longitudinal Family Flynn Effects.Journal of Intelligence · 2023Article
- Temporal Dementia and Cognitive Impairment Trends in the Very Old in the 21st Century.Journal of Alzheimer's disease : JAD · 2023Article
- Getting a Grip on Secular Changes: Age-Period-Cohort Modeling of Grip Strength in the English Longitudinal Study of Ageing.The journals of gerontology. Series A, Biological sciences and medical sciences · 2022Article
- Re-evaluating physiological indicators for all-cause mortality.The lancet. Healthy longevity · 2021Article
- Article
- Language in healthy and pathological ageing: Methodological milestones and challenges.International journal of language & communication disordersArticle
- Inter-cohort shifts in chronic disease, dementia, and mortality.Biodemography and social biologyArticle
- Early life adversity, race, and childhood socioeconomic status: intersecting drivers of later life cognition.Aging & mental healthArticle
- The Inverted U: Exploring the Interconnectedness of Movement and Cognitive Function Across the Lifespan.Wiley interdisciplinary reviews. Cognitive scienceReview
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
Abstract
Studies have reported that the age-adjusted incidence of cognitive impairment and dementia may 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 cannot explain changes in 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 cohort trends in cognitive function. At the same time, period effects have emerged in 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 is a primary determinant of old-age cognitive performance, this is the first study that proposes the need to connect known cohort effects in childhood cognition with differences in late-life functioning.
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.