Exploring the Relationship Between of Subjective and Objective Cognition among Older Adults Living in Canada
Notice bibliographique
Résumé
The older adult population in Canada is growing rapidly, increasing the prevalence and burden of conditions that impact these individuals, such as dementia. Given that early detection and intervention are strongly associated with better disease outcomes, understanding the progression from healthy aging to dementia is critical. Two factors contributing to disease progression are cognitive impairment on objective neuropsychological measures and subjective cognitive complaints. However, the association between individuals’ perceptions of their cognitive abilities and their performance on cognitive tests remains unclear. Therefore, the goal of this project was to gain insight into the relationship between subjective and objective cognitive functioning among older adults. This was performed using both a large-scale longitudinal dataset (Study 1) as well as a quasi-experimental study (Study 2). Study 1 analyzed the Canadian Longitudinal Study of Aging dataset to compare the relationship between “offline” subjective cognitive measures (i.e., self-reports) and cognitive performance in healthy older adults. The objective was to determine whether subjective ratings significantly predict cognitive performance at a single time point and/or change in cognitive performance over a three-year period. Study 2 consisted of an event memory task in which both older and younger adults watched a series of short video clips, performed a free recall task, and made memory confidence and subjective vividness ratings. The objective for Study 2 was to examine whether the relationship between various “online” subjective memory ratings (i.e., trial-by-trial metamemory) and event memory performance is impacted by age. Moreover, the effect of subjective vividness on these associations was assessed. Results from Study 1 demonstrated no significant associations between objective cognitive performance and self-reported cognitive ability cross sectionally and very weak associations longitudinally. Results from Study 2 indicated no age effects for overall metamemory accuracy (i.e., absolute accuracy) prospectively or retrospectively, but a benefit of younger age for trial-by-trial metamemory performance retrospectively. Vividness demonstrated strong associations with overall metamemory accuracy both prospectively and retrospectively, but no association with trial-by-trial metamemory monitoring. Taken together, the findings from these studies help tease apart previous equivocal results and provide insight into the relationship between subjective and objective functioning in older adults.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,002 | 0,006 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,001 |
| Bibliométrie | 0,001 | 0,003 |
| Études des sciences et des technologies | 0,003 | 0,001 |
| Communication savante | 0,002 | 0,001 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,002 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».