Impact of road network structure on dementia-related missing incidents: a spatial buffer approach.

Dementia-related missing incidents are a highly prevalent issue worldwide. Despite being associated with potentially life-threatening consequences, very little is still known about what environmental risk factors may potentially contribute to these missing incidents. The aim of this study was to conduct a retrospective, observational analysis using a large sample of police case records of missing individuals with dementia (n = 210). Due to the influence that road network structure has on our real world navigation, we aimed to explore the relationship between road intersection density, intersection complexity, and orientation entropy to the dementia-related missing incidents. For each missing incident location, the above three variables were computed at a 1 km radius buffer zone around these locations; these values were then compared to that of a set of random locations. The results showed that higher road intersection density, intersection complexity, and orientation entropy were all significantly associated with dementia-related missing incidents. Our results suggest that these properties of road network structure emerge as significant environmental risk factors for dementia-related missing incidents, informing future prospective studies as well as safeguarding guidelines.

Evaluation of antecedent behaviors of dementia-related wandering in community and facility settings.

Aim: To understand antecedent behaviors to critical wandering among persons living with dementia in or outside of a facility. Materials & methods: Caregivers were asked to write down the type and number of antecedent behaviors they observed in persons with dementia that were about to critically wander for 2-4 weeks. Observations were made through a developed questionnaire. Results: Six antecedent behaviors were observed: stating intent to leave, door lingering/tampering, preparing to go outside, packing up belongings, calling to be picked up and draw to outside stimuli. Conclusion: Information from this study can be used in the education of wander-management strategy adoption among caregivers of persons with dementia at risk of getting lost.

The validity of the online thought-probing procedure of mind wandering is not threatened by variations of probe rate and probe framing.

Recently, there has been a surge of interest in the measurement of mind wandering during ongoing tasks. The frequently used online thought-probing procedure (OTPP), in which individuals are probed on whether their thoughts are on-task or not while performing an ongoing task, has repeatedly been criticized, because variations in the frequency of thought probes and the order in which on-task and off-task thoughts are referred to have been shown to affect mind-wandering rates. Hitherto, it is unclear whether this susceptibility to measurement variation only affects mean response rates in probe-caught mind wandering or poses an actual threat to the validity of the OTPP, endangering the replicability and generalizability of study results. Here, we show in a sample of 177 students that variations of the frequency or framing of thought probes do not affect the validity of the OTPP. While we found that more frequent thought probing reduced the rate of probe-caught mind wandering, we did not replicate the effect that mind wandering is more likely to be reported when off-task thoughts are referred to first rather than second. Crucially, associations between probe-caught mind wandering and task performance, as well as associations between probe-caught mind wandering and covariates (trait mind wandering, reaction-time variability in the metronome-response task, and working-memory capacity) did not change with variations of the probing procedure. Therefore, it seems unlikely that the great heterogeneity in the way the OTPP is implemented across different studies endangers the replicability and generalizability of study results. Data and analysis code are available at https://osf.io/7w8bm/ .

Effects of walking on sundown syndrome in community-dwelling people with Alzheimer's disease.

BACKGROUND: Sundown syndrome is an important care issue for people with dementia (PwD) and for family caregivers. Walking is a safe and simple physical activity for most PwD, yet no research has explored the effects of different long-term walking periods on sundown syndrome. OBJECTIVES: This study aimed to determine the effects of walking on sundown syndrome, and to identify whether different walking time periods would show different effects on sundown syndrome in community-dwelling people with Alzheimer's disease. METHODS: A quasi-experimental designed study with repeated measurements was conducted. Sixty PwD were recruited and assigned to either the control group or the morning or afternoon walking group according to their caregiver's preference. The participants in the two walking groups completed an average of 120-min walking per week, accompanied by their caregivers. Forty-six achieved the 6-month intervention. Four measurements were taken, one at the pretest and one at weeks 8, 16 and 24. The Chinese version of the Cohen-Mansfield Agitation Inventory, community form (C-CMAI) was used to assess the severity of the sundown syndrome. The generalised estimating equation (GEE) was applied for the longitudinal data analysis. RESULTS: There was a significant change across the study period (p = .048) in the morning walking group, indicating that the score for sundown syndrome decreased when PwD walked in the morning. Considering group effects, compared to the control group, the C-CMAI scores significantly decreased after 16 weeks of walking in the afternoon walking group (p = .001) and after 24 weeks in both the morning and afternoon walking groups (p = .001), indicating that after PwD had walked for 16 weeks, sundown syndrome ameliorated in the afternoon group and continually decreased after 24 weeks in both the morning and afternoon groups. However, there was no significant group difference between the morning and afternoon walking groups during the 24-week walking intervention. CONCLUSIONS: The results indicated that both morning walking and afternoon walking are beneficial for ameliorating the symptoms of sundown syndrome; however, walking in the afternoon may have a faster effect on the symptoms than walking in the morning. Walking is a safe, simple, feasible and effective intervention to benefit individuals with sundown syndrome. IMPLICATIONS FOR PRACTICE: Regularly walking for 30 min a day, four times a week, is beneficial to alleviate sundown syndrome among PwD living in the community. Either morning or afternoon walking is effective for decreasing sundown syndrome, and the longer the walking time, the greater the impact on sundown syndrome.

What do we know about best police practices for lost persons with dementia? A scoping review.

Aim: To examine the efficacy of strategies used by the police for missing persons with dementia. Methods: Following the Preferred Reporting Items for Systematic Reviews and Meta-analysis guidelines, we searched peer-reviewed and gray literature of existing police practices used for missing persons with dementia. Data from the studies were analyzed descriptively. Results: The literature described 16 articles and 18 websites. Strategies ranged from identification tools, successful field techniques, locating technologies and community engagement/education. Overall scientific evidence was low, with only three studies evaluating the usability and effectiveness of the suggested strategies. Conclusion: More rigorous research is required to demonstrate the efficacy of best police practices for missing persons with dementia, which in turn could assist in the development of a best practice guideline.

Exploratory research on outcomes for individuals missing through dementia wandering in Japan.

AIM: To clarify the factors related to outcomes of individuals missing through dementia wandering. METHODS: We carried out binary logistic regression analysis with 160 family members of missing persons (88 survivors, 72 decedents). RESULTS: Living alone at the point of going missing (OR 13.45, 95% CI 1.12-161.56), being found within the local area (OR 6.36, 95% CI 2.26-17.88), and a long period between going missing and being found (OR 6.14, 95% CI 3.14-12.00) were significantly related with death. CONCLUSIONS: Early detection of missing persons is essential in preventing dementia wandering-related deaths. The time taken to locate missing dementia patients who lived alone was longer, relative to that of those who lived with others, and this increased the risk of death. Furthermore, the locations where the deceased were located tended to be local, rather than distant areas. Geriatr Gerontol Int 2019; 19: 902-906.

Heroic music stimulates empowering thoughts during mind-wandering.

It is generally well-known, and scientifically well established, that music affects emotions and moods. However, only little is known about the influence of music on thoughts. This scarcity is particularly surprising given the importance of the valence of thoughts for psychological health and well-being. We presented excerpts of heroic- and sad-sounding music to n = 62 individuals, and collected thought probes after each excerpt, assessing the valence and the nature of thoughts stimulated by the music. Our results show that mind-wandering emerged during listening to either type of music (heroic, sad), and that the type of music strongly influenced the thought contents during mind-wandering. Heroic-sounding music evoked more positive, exciting, constructive, and motivating thoughts, while sad-sounding music evoked more calm or demotivating thoughts. The results thus indicate that music has a strong effect on the valence of thought contents during mind-wandering, with heroic music evoking more empowering and motivating thoughts, and sad music more relaxing or depressive thoughts. These findings have important implications for the use of music in everyday life to promote health and well-being in both clinical populations and healthy individuals.

"Would you like to join me for a walk?" The feasibility of a supervised walking programme for people with dementia who wander.

AIMS AND OBJECTIVES: Five of the eight focus areas of Bowen's Feasibility Framework were utilised to assess the feasibility of implementing the Safe Walking Program (SWP) with people with severe dementia who wander in long-term care (LTC). BACKGROUND: Dementia-related wandering in LTC is associated with adverse outcomes related to intensity (malnutrition, exhaustion and pain, injury) and type of walking (sleep deprivation, resident violence and elopement, death). There is little evidence guiding best practice for managing wandering in LTC. DESIGN: The SWP involved a three-week trial of taking residents (n = 7) for a 30-min supervised walk, 30 min before individual peak walking activity periods (PWAP), outside the care facility. Quantitative (real-time observation and 24/7 Actigraph™ data: not reported here) and qualitative data were collected pre-, during and postintervention. METHODS: Feasibility to implement the SWP protocol was evaluated using a protocol fidelity checklist completed at the end of each scheduled intervention. Acceptability and sustainability of the programme were evaluated through staff interviews. RESULTS: Eighty per cent of scheduled walks commenced and were completed, with 91% of walks lasting the full 30 min. Care staff reported benefits for participants and care staff. The perceived sustainability of the SWP in the LTC setting was impacted by the strict timing of the walk to coincide with participant's individual PWAP. The use of care staff to lead some scheduled walks was seen as interfering with care routines. CONCLUSIONS: To enhance the acceptability/sustainability of the SWP in LTC, further testing of the importance of dose and timing is required. Consideration needs to be given to suggested modifications to the protocol. IMPLICATIONS FOR PRACTICE: The SWP is an acceptable and enjoyable activity for people with severe dementia who wander. Utilising walking tracks around the neighbourhood was perceived as being an important element of the programme.

Is There a Positive Association Between Working Memory Capacity and Mind Wandering in a Low-Demand Breathing Task? A Preregistered Replication of a Study by Levinson, Smallwood, and Davidson (2012).

Levinson, Smallwood, and Davidson (2012, Experiment 2) found that working memory capacity (WMC) correlated positively with mind-wandering rates measured by thought probes in a breath-awareness task but was unassociated with the tendency to self-catch mind wandering. Here, I sought to replicate the associations between mind wandering and WMC in Levinson et al.'s breath-awareness task. The data from the current study, collected from 315 subjects ( ns differed among analyses) and two measures of WMC, suggest that if WMC correlates with probe-caught mind wandering, the association is most likely negative. In addition, the evidence regarding self-caught mind wandering is consistent with that found by Levinson et al. for the sum of self-caught responses, but when self-caught responses were considered in proportion to probe-caught mind wandering, modest evidence was found for a positive association with WMC.

Dementia Reported Missing: Use of an Online Search Engine to Track Outcomes in Persons With Dementia Reported Missing.

BACKGROUND: Persons with dementia (PWD) reported missing are known to be at high risk for mortality. Analysis of online search engines' reports of missing PWD may show patterns in the data of this relatively common event and the broad patterns relevant to mortality risk factors. METHODS: We searched Google news for PWD reported missing for 2015. Demographics, personal details, and outcomes were recorded. RESULTS: Of 673 cases, 67 were found deceased, 525 alive, and the remainder had unknown outcomes. Mortality did not differ significantly by race/ethnicity for cases with known outcomes, but cases with unknown outcomes were significantly overrepresented among non-Caucasians (P<0.001; analysis of variance). Duration missing predicted mortality (P<0.001; χ(2)), and mortality was lower if a photograph was provided (P<0.05; χ(2)). Five states had no reports and some appeared to have fewer reports that would be expected based on estimates of dementia prevalence. CONCLUSIONS: Duration missing was the strongest predictor of mortality. Likelihood of mortality was not predicted by use of missing person alerts, and this may be a consequence of inconsistent reporting and follow-up of cases across states. Prevalence and mortality may likewise be underestimated because of the variability in usage and reporting of relevant search terms and definitions. Online resources and social media can provide information about trends and outcomes related to missing persons with dementia, but greater consistency is needed in definitions, searching, and reporting.

When the Muses Strike: Creative Ideas of Physicists and Writers Routinely Occur During Mind Wandering.

How often are creative ideas generated during episodes of mind wandering, and do they differ from those generated while on task? In two studies ( N = 98, N = 87), professional writers and physicists reported on their most creative idea of the day, what they were thinking about and doing when it occurred, whether the idea felt like an "aha" moment, and the quality of the idea. Participants reported that one fifth of their most significant ideas of the day were formed during spontaneous task-independent mind wandering-operationalized here as (a) engaging in an activity other than working and (b) thinking about something unrelated to the generated idea. There were no differences between ratings of the creativity or importance of ideas that occurred during mind wandering and those that occurred on task. However, ideas that occurred during mind wandering were more likely to be associated with overcoming an impasse on a problem and to be experienced as "aha" moments, compared with ideas generated while on task.

Effectiveness of a home-based missing incident prevention program for community-dwelling elderly patients with dementia.

ABSTRACTBackground:Getting lost is a recognized complication in patients with dementia. Preventive measures are lacking. This study aims to investigate the effectiveness of a home-based missing incident prevention program (HMIPP) in reducing missing incidents, time of searching, and caregivers' stress. METHODS: The design was a pre- and post-intervention study. Patients were recruited from a hospital-based Geriatric Memory Clinic. Inclusion criteria were as follows: aged 60 years or above, established dementia, and Modified Functional Ambulation Categories score VI or VII. An occupational therapist performed the interventions at the patients's home. These included dementia education, prescription of assistive devices, on-site skills training, environmental modifications, community service referrals, and redesigning of daily life routine tasks. The number of missing incidents and caregivers' stress at three months and one year were compared with baseline data from one year before and the secondary outcome was time for searching of the last incident. RESULTS: A total of 54 patients were recruited. The mean age was 78.8 years and 54% were females. Majority of patients had moderate dementia. The mean number of missing incidents per year was significantly reduced at three months and one year (0.70, 0.22, and 0.14 at 0, 3, and 12 months, respectively; p < 0.001). The time for searching of last missing episode was reduced significantly (6.25, 0.13, and 0.35 hours, respectively; p < 0.001). The caregivers' stress also decreased significantly at three months and one year. CONCLUSION: The HMIPP was effective in reducing the number of missing incidents, searching time, and caregivers' stress at three months and one year.

Wandering as a Sociomaterial Practice: Extending the Theorization of GPS Tracking in Cognitive Impairment.

Electronic tracking through global positioning systems (GPSs) is used to monitor people with cognitive impairment who "wander" outside the home. This ethnographic study explored how GPS-monitored wandering was experienced by individuals, lay carers, and professional staff. Seven in-depth case studies revealed that wandering was often an enjoyable and worthwhile activity and helped deal with uncertainty and threats to identity. In what were typically very complex care contexts, GPS devices were useful to the extent that they aligned with a wider sociomaterial care network that included lay carers, call centers, and health and social care professionals. In this context, "safe" wandering was a collaborative accomplishment that depended on the technology's materiality, affordances, and aesthetic properties; a distributed knowledge of the individual and the places they wandered through, and a collective and dynamic interpretation of risk. Implications for design and delivery of GPS devices and services for cognitive impairment are discussed.

Ruminative minds, wandering minds: Effects of rumination and mind wandering on lexical associations, pitch imitation and eye behaviour.

This study demonstrates that rumination is reflected in two behavioural signals that both play an important role in face-to-face interactions and provides evidence for the negative impact of rumination on social cognition. Sixty-one students were randomly assigned either to a condition in which rumination was induced or to a control condition. Their task was to play a speech-based word association game with an Embodied Conversational Agent during which their word associations, pitch imitation and eye movements were measured. Two questionnaires assessed their ruminative tendencies and mind wandering thoughts, respectively. Rumination predicted differences in task-related mind wandering, polarity of lexical associations, pitch imitation, and blinks while mind wandering predicted differences in saccades. This outcome may show that rumination has a negative impact on certain aspects of social interactions.

Beyond V40.31: Narrative Phenomenology of Wandering in Autism and Dementia.

Research on autism spectrum disorder (ASD) and on Alzheimer's Disease (AD) and other types of dementia describes a behaviour called 'wandering', a term that denotes movement through space lacking intention or exact destination, as when a person is disoriented or not self-aware. In the U.S., 'wandering' in both ASD and AD has been examined mostly from a management and prevention perspective. It prioritizes safety while primarily overlooking personal experiences of those who 'wander' and their families, thus limiting the range of potentially effective strategies to address this issue. Communicative challenges faced by many people diagnosed with ASD and AD further obscure the experiential, existential aspects of 'wandering'. This article reflects an increasing concern of social science scholars interested in whether and how the conceptual and practical strategies to address 'wandering' are informed by the situated experiences of people with cognitive and developmental disabilities and their families. We examine 'wandering' at the intersections of personal experience, family life, clinical practice, public health policy, and legislation, as a conceptually rich site where notions of personhood, subjectivity, intentionality, and quality of life powerfully and consequentially converge to impact the lives of many people with ASD and AD, and their families. We draw upon critical autism studies describing how attributions of personhood, subjectivity, intentionality, rational agency, and moral autonomy of people with ASD have been contingent upon the norms and conventions governing movement of the human body through space (Hilton, Afr Am Rev 50(2):221-235, 2017). When this movement is deemed aberrant, the person may be construed as irrational, a danger to self because of a lack of self-awareness, and a danger to others because of a lack of empathy. These attributions put the person at risk of being excluded from the considerations and, more importantly, the obligations of the 'moral community' to ensure that he or she has a 'good human life' (Barnbaum, The Ethics of Autism: Among Them but not of Them. Indiana University Press, Bloomington, 2008; Silvers and Francis, Metaphilosophy 40(3/4):475-498, 2009). Using ethnographic, narrative phenomenological (Mattingly, The Paradox of Hope: Journeys through a Clinical Borderland. Berkeley: University of California Press, 2010), and medical humanities (Charon, JAMA 286:1897-1902, 2001; Narrative Medicine: Honoring the Stories of Illness. New York: Oxford University Press, 2006) approaches, we examine multiple perspectives on 'wandering' in ASD and AD across narrative discourse genres, institutional contexts, and media of representation. We argue for an extension of the prevention and management view to focus not only on safety but also on what phenomenologist Merleau-Ponty (1962) called "having a world" (p. 146). The analysis is intended to inform clinical practice, policy and public health efforts to enhance understanding of first and second person perspectives on 'wandering' in order to improve the participation and quality of life of people with ASD and AD who 'wander', and their families.

Factors Associated With Wandering Behaviors in Veterans With Mild Dementia: A Prospective Longitudinal Community-Based Study.

OBJECTIVE: To investigate baseline factors associated with caregiver-reported wandering among community-dwelling veterans with mild dementia. METHODS: Veterans with mild dementia (N = 143) and their caregivers participated in a 2-year prospective longitudinal study. Measures assessed wandering, daily function, behavior, cognition, and personality features. Wandering was dichotomized as present or absent across study periods, and associations with baseline characteristics were examined. RESULTS: One-quarter of participants demonstrated caregiver-reported wandering at 1 or more study visits, with 14% to 15% wandering at any 1 visit. Wandering was associated with significantly lower baseline scores in performance of daily function, behavioral response to stress, gait, and balance, and conscientiousness. CONCLUSIONS: This novel study evaluated wandering in a community-dwelling sample of veterans with mild dementia. Wandering was associated with a specific personality trait, poorer behavioral response to stress as well as greater functional and gait/balance impairment. These findings may assist in developing community-based interventions for caregivers.

Sundown Syndrome, Sleep Quality, and Walking Among Community-Dwelling People With Alzheimer Disease.

PURPOSES: Sundown syndrome and sleep disturbances cause people with Alzheimer disease (PAD) and caregivers suffering. Studies have indicated that physical exercise could have a positive impact on sundown syndrome, yet no research has ever explored the relationship between walking and sundown syndrome. The aims of this study were to examine the relationship between sundown syndrome and sleep quality, and determine whether the severity of dementia, sleep quality, and weekly duration of walking influenced sundown syndrome, and to assess differences in sundown syndrome and sleep quality in relation to the accompanying walker and weekly duration of walking among people with Alzheimer disease living in the community. DESIGN: A cross-sectional observation study was conducted. METHODS: A total 184 participants were recruited from dementia outpatient clinics of several hospitals and long-term care resource management centers in southern Taiwan. The Chinese version of the Cohen-Mansfield Agitation Inventory, Community form was used to assess sundown syndrome, and the Chinese version of the Pittsburgh Sleep Quality Index was used to measure sleep quality. Pearson correlation, multiple regression, and 1-way analysis of variance were performed for data analysis. RESULTS: The results indicated that sundown syndrome was significantly correlated with sleep quality (r = 0.374), whereas severity of dementia, sleep quality, and weekly duration of walking were influencing factors of sundown syndrome and accounted for a total of 24.8% of the variance (adjusted R2 = 0.222, F6,177 = 9.709). In addition, PAD who walked with relatives showed less sundown syndrome (F3,180 = 4.435, P = .005) and better sleep quality (F3,180 = 3.565, P = .015) compared with those walking with nonrelatives. Also, longer walking time led to less sundown syndrome (F4,179 = 4.351, P = .002) and better sleep quality (F4,179 = 3.592, P = .008). CONCLUSIONS: Advanced dementia, poor sleep quality, and shorter weekly duration of walking were the influencing factors of sundown syndrome. Walking with relatives and regular longer walking time could improve sleep quality and alleviate sundown syndrome. It is suggested that a well-designed walking intervention considering these factors could be an appropriate strategy to manage sundown syndrome and sleep quality for PAD and their caregivers.

From wandering to wayfaring: Reconsidering movement in people with dementia in long-term care.

The movement of people with dementia in long-term care continues to be an issue of concern among clinicians, caregivers and families. This article will examine the social construction "wandering" and its association with pathology, risk discourse and surveillance technologies. Further, the article will explore the recent shift from the term "wanderer" to the phrase "people who like to walk" in person-centred dementia care. Engaging with Ingold's concept of movement as wayfaring, an alternative becoming-centred understanding of movement and its significance for people with dementia will be presented and illustrated through a case study. The paper concludes that depathologizing movement opens the possibility to see movement in people with dementia as an intention to be alive and to grow, rather than as a product of disease and deterioration. Suggestions for future research and implications for care interventions are discussed.

Towards defining restlessness in individuals with dementia.

OBJECTIVES: Most individuals with dementia develop significant behavioral problems. Restlessness is a behavioral symptom frequently endorsed by caregivers as distressing, yet is variably defined and measured. Lack of conceptual and operational clarity hinders an understanding of this common behavioral type, its prevalence, and development of effective interventions. We advance a systematic definition and understanding of restlessness from which to enhance reporting and intervention development. METHOD: We reviewed the literature for existing definitions and measures of restlessness, identified common elements across existing definitions, assessed fit with relevant theoretical frameworks, and explored the relationship between restlessness and other behavioral symptoms in a data set of 272 community-dwelling persons with dementia. RESULTS: Twenty-five scales assessing restlessness were identified. Shared components included motor/neurological, psychiatric, and needs-based features. Exploratory analyses suggest that restlessness may co-occur primarily with argumentation, anxiety, waking the caregiver, delusions/hallucinations, and wandering. We propose that restlessness consists of three key attributes: diffuse motor activity or motion subject to limited control, non-productive or disorganized behavior, and subjective distress. Restlessness should be differentiated from and not confused with wandering or elopement, pharmacological side effects, a (non-dementia) mental or movement disorder, or behaviors occurring in the context of a delirium or at end-of-life. CONCLUSION: Restlessness appears to denote a distinct set of behaviors that have overlapping but non-equivalent features with other behavioral symptoms. We propose that it reflects a complex behavior involving three key characteristics. Understanding its specific manifestations and which components are present can enhance tailoring interventions to specific contexts of this multicomponent behavioral type.