Comparing different types of source memory attributes in dementia of Alzheimer's type

ABSTRACTBackground: Source monitoring (SM) refers to our ability to discriminate between memories from different sources.Methods: Twenty healthy high-cognitive functioning older adults, 20 healthy low-cognitive functioning older adults, and 20 older adults with dementia of Alzheimer's type (DAT) were asked to perform a series of SM tasks that varied in terms of the to-be-remembered source attribute (perceptual, spatial, temporal, semantic, social, and affective details).Results: Results indicated that older DAT adults had greater difficulty in SM compared to the healthy control groups, especially with spatial and semantic details.Conclusions: Data are discussed in terms of the SM framework and suggest that poor memory for some types of source information may be considered as an important indicator of clinical memory function when assessing for the presence and severity of dementia.

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Metacognitive inferences in source memory judgements: The role of perceived differences in item recognition

Quarterly Journal of Experimental Psychology ◽

10.1080/17470210600875215 ◽

2007 ◽

Vol 60 (7) ◽

pp. 1015-1040 ◽

Cited By ~ 23

Author(s):

Thorsten Meiser ◽

Christine Sattler ◽

Ulrich Von Hecker

Keyword(s):

Source Memory ◽

Source Monitoring ◽

Item Recognition ◽

World Knowledge ◽

Source Information ◽

Monitoring Model ◽

Metacognitive Beliefs ◽

Presentation Time ◽

Different Sources

This research investigated the hypothesis that metacognitive inferences in source memory judgements are based on the recognition or nonrecognition of an event together with perceived or expected differences in the recognizability of events from different sources. The hypothesis was tested with a multinomial source-monitoring model that allowed separation of source-guessing tendencies for recognized and unrecognized items. Experiments 1A and 1B manipulated the number of item presentations as relevant source information and revealed differential guessing tendencies for recognized and unrecognized items, with a bias to attribute unrecognized items to the source associated with poor item recognition. Experiments 2A and 2B replicated the findings with a manipulation of presentation time and extended the analysis to subjective differences in item recognition. Experiments 3A and 3B used more natural source information by varying type of acoustic signal and demonstrated that subjective theories about differences in item recognition are sufficient to elicit differential source-guessing biases for recognized and unrecognized items. Together the findings provide new insights into the cognitive processes underlying source memory decisions, which involve episodic memory and reconstructive tendencies based on metacognitive beliefs and general world knowledge.

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Interindividual Differences in Cognitive Functioning Are Associated with Autobiographical Memory Retrieval Specificity in Older Adults

GeroPsych ◽

10.1024/1662-9647/a000219 ◽

2020 ◽

Vol 33 (1) ◽

pp. 15-29 ◽

Cited By ~ 1

Author(s):

Sarah Peters ◽

Signy Sheldon

Keyword(s):

Older Adults ◽

Cognitive Functioning ◽

Autobiographical Memory ◽

Memory Retrieval ◽

Cognitive Status ◽

Specific Information ◽

Generation Task ◽

Interindividual Differences ◽

Retrieval Cues ◽

Contextual Support

Abstract. We examined whether interindividual differences in cognitive functioning among older adults are related to episodic memory engagement during autobiographical memory retrieval. Older adults ( n = 49, 24 males; mean age = 69.93; mean education = 15.45) with different levels of cognitive functioning, estimated using the Montreal Cognitive Assessment (MoCA), retrieved multiple memories (generation task) and the details of a single memory (elaboration task) to cues representing thematic or event-specific autobiographical knowledge. We found that the MoCA score positively predicted the proportion of specific memories for generation and episodic details for elaboration, but only to cues that represented event-specific information. The results demonstrate that individuals with healthy, but not unhealthy, cognitive status can leverage contextual support from retrieval cues to improve autobiographical specificity.

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A Hierarchy of Multinomial Models for Multidimensional Source Monitoring

Methodology ◽

10.1027/1614-1881.1.1.2 ◽

2005 ◽

Vol 1 (1) ◽

pp. 2-17 ◽

Cited By ~ 21

Author(s):

Thorsten Meiser

Keyword(s):

Cognitive Processes ◽

Source Monitoring ◽

Source Information ◽

Model Comparisons ◽

Storage And Retrieval ◽

Multinomial Processing Tree ◽

Multinomial Models ◽

Hierarchical Relationship ◽

Statistical Framework ◽

Tree Models

Abstract. Several models have been proposed for the measurement of cognitive processes in source monitoring. They are specified within the statistical framework of multinomial processing tree models and differ in their assumptions on the storage and retrieval of multidimensional source information. In the present article, a hierarchical relationship is demonstrated between multinomial models for crossed source information ( Meiser & Bröder, 2002 ), for partial source memory ( Dodson, Holland, & Shimamura, 1998 ) and for several sources ( Batchelder, Hu, & Riefer, 1994 ). The hierarchical relationship allows model comparisons and facilitates the specification of identifiability conditions. Conditions for global identifiability are discussed, and model comparisons are illustrated by reanalyses and by a new experiment on the storage and retrieval of multidimensional source information.

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Subjective Sleep Problems and Cognitive Functioning in Nondemented Older Adults

PsycEXTRA Dataset ◽

10.1037/e532132007-001 ◽

2006 ◽

Author(s):

Timothy J. Schmutte ◽

Shelby Harris ◽

Ross Levin ◽

Richard Zweig ◽

Mindy Katz ◽

...

Keyword(s):

Older Adults ◽

Cognitive Functioning ◽

Sleep Problems ◽

Subjective Sleep

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Effects of regular exercise on motor skills and cognitive functioning in older adults

PsycEXTRA Dataset ◽

10.1037/e599302010-001 ◽

2013 ◽

Author(s):

Dorothee Alfermann ◽

Cathleen Illig ◽

Katja Linde ◽

Ines Pfeffer

Keyword(s):

Older Adults ◽

Cognitive Functioning ◽

Motor Skills ◽

Regular Exercise

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Impact of Social Isolation on People with Dementia and Their Family Caregivers

Journal of Alzheimer s Disease ◽

10.3233/jad-201580 ◽

2021 ◽

pp. 1-11

Author(s):

Lílian Viana dos Santos Azevedo ◽

Ismael Luis Calandri ◽

Andrea Slachevsky ◽

Héctor Gastón Graviotto ◽

Maria Carolina Santos Vieira ◽

...

Keyword(s):

Family Caregivers ◽

Social Isolation ◽

Clinical Symptoms ◽

Memory Function ◽

South American ◽

Severe Dementia ◽

Dementia Caregivers ◽

People With Dementia ◽

Moderate Dementia ◽

Severity Of Dementia

Background: People with dementia and their family caregivers may face a great burden through social isolation due to the COVID-19 pandemic, which can be manifested as various behavioral and clinical symptoms. Objective: To investigate the impacts of social isolation due to the COVID-19 pandemic on individuals with dementia and their family caregivers. Methods: Two semi-structured questionnaires were applied via telephone to family caregivers of people diagnosed with dementia in three cities in Argentina, Brazil, and Chile, in order to assess clinical and behavioral changes in people with dementia and in their caregivers. Results: In general, 321 interviews were conducted. A significant decline in memory function has been reported among 53.0%of people with dementia. In addition, 31.2%of individuals with dementia felt sadder and 37.4%had increased anxiety symptoms. These symptoms of anxiety were greater in individuals with mild to moderate dementia, while symptoms of agitation were greater in individuals with severe dementia. Moreover, compulsive-obsessive behavior, hallucinations, increased forgetfulness, altered appetite, and increased difficulty in activities of daily living were reported more frequently among individuals with moderate to severe dementia. Caregivers reported feeling more tired and overwhelmed during this period and these symptoms were also influenced by the severity of dementia. Conclusion: Social isolation during the COVID-19 pandemic triggered a series of negative behavioral repercussions, both for people with dementia and for their family caregivers in these three South American countries.

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The impact of the COVID-19 pandemic on wellbeing and cognitive functioning of older adults

Scientific Reports ◽

10.1038/s41598-021-84127-7 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Sarah De Pue ◽

Céline Gillebert ◽

Eva Dierckx ◽

Marie-Anne Vanderhasselt ◽

Rudi De Raedt ◽

...

Keyword(s):

Mental Health ◽

Older Adults ◽

At Risk ◽

Sleep Quality ◽

Cognitive Functioning ◽

Online Survey ◽

Activity Level ◽

The Impact

AbstractCOVID-19 took a heavy toll on older adults. In Belgium, by the end of August, 93% of deaths due to COVID-19 were aged 65 or older. Similar trends were observed in other countries. As a consequence, older adults were identified as a group at risk, and strict governmental restrictions were imposed on them. This has caused concerns about their mental health. Using an online survey, this study established the impact of the COVID-19 pandemic on adults aged 65 years or older, and which factors moderate this impact. Participants reported a significant decrease in activity level, sleep quality and wellbeing during the COVID-19 pandemic. Depression was strongly related to reported declines in activity level, sleep quality, wellbeing and cognitive functioning. Our study shows that the COVID-19 pandemic had a severe impact on the mental health of older adults. This implies that this group at risk requires attention of governments and healthcare.

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The Relationship Between Daily Rapid-Eye Movement Sleep and Cognitive Functioning in Older Adults

Innovation in Aging ◽

10.1093/geroni/igaa057.518 ◽

2020 ◽

Vol 4 (Supplement_1) ◽

pp. 159-159

Author(s):

Tiana Broen ◽

Tomiko Yoneda ◽

Jonathan Rush ◽

Jamie Knight ◽

Nathan Lewis ◽

...

Keyword(s):

Older Adults ◽

Working Memory ◽

Cognitive Functioning ◽

Eye Movement ◽

Rem Sleep ◽

Cognitive Tests ◽

Rapid Eye Movement ◽

Targeted Interventions ◽

The Impact ◽

The Relationship

Abstract Previous cross-sectional research suggests that age-related decreases in Rapid-Eye Movement (REM) sleep may contribute to poorer cognitive functioning (CF); however, few studies have examined the relationship at the intraindividual level by measuring habitual sleep over multiple days. Applying a 14-day daily diary design, the current study examines the dynamic relationship between REM sleep and CF in 69 healthy older adults (M age=70.8 years, SD=3.37; 73.9% female; 66.6% completed at least an undergraduate degree). A Fitbit device provided actigraphy indices of REM sleep (minutes and percentage of total sleep time), while CF was measured four times daily on a smartphone via ambulatory cognitive tests that captured processing speed and working memory. This research addressed the following questions: At the within-person level, are fluctuations in quantity of REM sleep associated with fluctuations in next day cognitive measures across days? Do individuals who spend more time in REM sleep on average, perform better on cognitive tests than adults who spend less time in REM sleep? A series of multilevel models were fit to examine the extent to which each index of sleep accounted for daily fluctuations in performance on next day cognitive tests. Results indicated that during nights when individuals had more REM sleep minutes than was typical, they performed better on the working memory task the next morning (estimate = -.003, SE = .002, p = .02). These results highlight the impact of REM sleep on CF, and further research may allow for targeted interventions for earlier treatment of sleep-related cognitive impairment.

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Association between Physical Frailty Subdomains and Oral Frailty in Community-Dwelling Older Adults

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18062931 ◽

2021 ◽

Vol 18 (6) ◽

pp. 2931

Author(s):

Ryo Komatsu ◽

Koutatsu Nagai ◽

Yoko Hasegawa ◽

Kazuki Okuda ◽

Yuto Okinaka ◽

...

Keyword(s):

Older Adults ◽

Gait Speed ◽

Community Dwelling ◽

Health Study ◽

Cardiovascular Health Study ◽

Physical Frailty ◽

Cross Sectional ◽

Important Indicator ◽

Community Dwelling Older Adults ◽

Oral Frailty

This cross-sectional study aimed to demonstrate the association between physical frailty subdomains and oral frailty. This study involved community-dwelling older adults (aged ≥65 years). Physical frailty was assessed with the Japanese version of the Cardiovascular Health Study criteria. Oral frailty was defined as limitations in at least three of six domains. Logistic regression analysis was used to analyze the association between physical frailty risk and oral frailty. In addition, we examined the association between physical frailty subdomains (gait speed, grip strength, exhaustion, low physical activity, and weight loss) and oral frailty. A total of 380 participants were recruited for this study. Overall, 18% and 14% of the participants were at risk of physical frailty and had oral frailty, respectively. Physical frailty risk (odds ratio (OR) = 2.40, 95% confidence interval (CI): 1.22–4.75, p = 0.012) was associated with oral frailty in multivariate analysis. In secondary analysis, among physical frailty subdomains, gait speed (OR = 0.85, 95% CI: 0.73–0.97, p = 0.019) was associated with oral frailty. The present findings suggest that physical frailty is closely related to oral frailty. Among physical frailty subdomains, decreased gait speed in particular is an important indicator related to the development of oral frailty.

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Associative Imagery as a Strategy to Improve Destination Memory in Younger and Older Adults

Innovation in Aging ◽

10.1093/geroni/igaa057.1164 ◽

2020 ◽

Vol 4 (Supplement_1) ◽

pp. 361-362

Author(s):

Tara Johnson ◽

Katie Stanko ◽

Susan Jefferson

Keyword(s):

Older Adults ◽

Mental Imagery ◽

Source Monitoring ◽

Memory Performance ◽

Grocery Store ◽

Control Group ◽

False Alarms ◽

Imagery Condition ◽

Destination Memory ◽

Shared Information

Abstract Destination memory errors (inability to remember to whom information was shared) affects all ages, but older adults are particularly vulnerable due to poor source monitoring. Individuals may assume information was already shared when it was not or repeat previously shared information. The current study explored two mental imagery strategies (vivid imagery, visualizing context) to improve destination memory. Using a software program, younger and older adults told randomly generated facts to random celebrity faces. Participants were unaware of the upcoming memory tests. The control group did not use a strategy. The imagery group used vivid imagery to connect the fact and face (e.g., visualize Oprah on a dime to remember Oprah was told that dimes have 118 ridges). The context group visualized a provided context (e.g., grocery store) when telling a fact to a face. Assessments of performance on item memory (facts, faces) as well as destination memory (face-fact pairings) were counterbalanced. Results indicated an associative memory deficit among older adults, which was driven by a higher rate of false alarms. However, across all adults, the vivid imagery condition was more accurate than the control condition, and they demonstrated fewer false alarms. These findings suggest that older adults can use mental imagery to reduce false alarms and improve destination memory performance. Implications include reducing age stereotypes, improving conversations, and decreasing potentially dangerous situations (e.g., withholding important health information thinking it already was shared with a doctor).

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