Emotional and Cognitive Empathy in Caregivers of Persons with Neurodegenerative Disease: Relationships with Caregiver Mental Health

Evaluation of pharmacy student empathy toward patients living with Alzheimer's disease and related dementias and caregivers following a dementia simulation

Alzheimer's Disease and Related Dementias (ADRD) is a leading cause of death in the United States, with national goals in place to improve the quality of care provided to this population. With little available literature on empathy training for pharmacy students in caring for patients living with ADRD, this study outlined the implementation process of an immersive sensory experience, the Virtual Dementia Tour (VDT), into a Doctor of Pharmacy curriculum and evaluated the impact of the experience on pharmacy students' empathy for persons living with ADRD. After completing the VDT, quantitative analysis demonstrated a significant reduction in the pharmacy students' ability to capably complete tasks and relax, and a positive change in their perceptions of the need for improved care for persons living with ADRD. Qualitative analytical approaches identified themes of "Empathy," "Patient Care and Advocacy," "Education," as well as the cognitive, mental, and physical impact of the experience. Valuable lessons learned while providing ADRD empathy training to Doctor of Pharmacy students includes reallocation of faculty resources, curricular development of an innovative empathy-building experience for students, and improved experience delivery efficiency. Overall, a significant change in pharmacy students' empathy toward patients living with ADRD was observed.

Examination of the relationship between the empathic tendencies and sleep quality of caregivers of cancer patients

PURPOSE

The present study aims to reveal the relationship between the empathic tendencies and sleep quality of caregivers of cancer patients.

MATERIAL AND METHOD

This cross-sectional study was conducted with caregivers of cancer patients registered in the oncology unit of a hospital between May and July 2024 (n = 346). The study data were collected using a sociodemographic information form, the Empathic Tendency Scale, and the Pittsburgh Sleep Quality Index. The data were analyzed using the Pearson correlation and hierarchical regression analyses as well as descriptive statistics.

FINDINGS

59.5% of the participants were female and 88.2% lived with patients. 62.7% of the cancer patients were male and 61.1% were partially dependent in daily life activities. The caregivers had a mean total score of 70.58 ± 16.85 on the Empathic Tendency Scale and a mean total score of 4.40 ± 3.94 on the Pittsburgh Sleep Quality Index. It was found that there was a negative, strong, and statistically significant relationship between the mean total scores on the Empathic Tendency Scale and the Pittsburgh Sleep Quality Index (r = - 0.924; p < 0.001). According to the hierarchical regression model, certain sociodemographic features of the caregivers explained the variance in empathic tendency (Adj. R2 = 0.607; p < 0.001), whereas when sleep quality components were added to the model, the variance in empathic tendency was explained (Adj. R2 = 0.896; p < 0.001).

CONCLUSION

The caregivers of cancer patients were found to have high empathic tendencies, which was associated with high sleep quality. Furthermore, low empathic tendencies among the caregivers were found to be primarily associated with increasing length of care and advancing patient age. The findings underscore the pivotal role that empathic approaches play in enhancing the quality of care, underscoring the necessity for augmented interventions that prioritize a compassionate approach, and the management of empathy in caregivers of cancer patients.

Experiences of 'Indirect' Illness in Family Caregivers of Chronically Ill and Older Adults: A Qualitative Study

The care of chronically ill and older adults affects families in terms of physical, emotional, relational, and social impact; the functioning of the family; and an alteration in family dynamics. This study aimed to evaluate the experiences of family caregivers of older patients in depth. A qualitative study was conducted, consisting of twenty-four narrative interviews with caregivers of chronically ill and older adults, consisting of twenty-three women and one man. The caregivers were all close relatives of the patients. The main results were as follows: (i) caregiving is predominantly performed by females; (ii) the caregiver experiences an 'indirect' illness; (iii) the family undergoes changes in roles, responsibilities, and relationships; (iv) support needs emerge, especially those of a social, family, work, and economic nature; and (v) resources are also activated, linked to the presence or absence of self-care. Illnesses directly impact the primary caregiver, but they also have repercussions on the entire family unit, which may activate coping strategies or lead to breakdown. It is crucial to accurately monitor the new family dynamics in order to find suitable solutions to support the family of chronically ill and older patients, underscoring the importance of work in this area.

Empathy and Mental Health of Preschool Teachers: A Latent Profile Analysis

Purpose

This research, grounded in the self-other oriented empathy theoretical framework, aimed to explore the classification of empathy and its relationship with mental health among preschool teachers.

Methods

A total of 4345 preschool teachers participated in the study. Mental health was assessed using the Symptom Checklist 90 (SCL-90), and empathy was measured with the Chinese version of the Interpersonal Reactivity Index (IRI-C). Data were collected through a comprehensive preschool education service platform. Latent profile analysis (LPA) was employed to identify subgroups of preschool teachers by self- and other empathy pattern types. Descriptive statistics, bivariate cross-tabulations, and multinomial logistic regression were used to characterize each profile while quantifying associations with mental health.

Results

A four-profile model was identified as the best fit in this latent profile analysis: the largest profile of preschool teachers was characterized by moderate self- and other-oriented empathy (46.5%), a second profile was characterized by high self- and other-oriented empathy (25.2%), a third profile was characterized by high other-oriented and low self-oriented empathy (20.8%), and the smallest profile was characterized by both low self- and other-oriented empathy (7.5%). Significant differences in mental health were observed between the latent profile. The high empathy profile exhibited the highest level of mental health risk, while the other-oriented groups showed the lowest level.

Conclusion

There are four latent profiles of empathy in preschool teachers, and the profiles of empathy are related to mental health.

Recognition of mild cognitive impairment in older adults using a polynomial regression model based on prefrontal cortex hemoglobin oxygenation

AIM

This study employed a three-minute game-based intelligence test (GBIT) to create a hemoglobin polynomial regression model for early identification of mild cognitive impairment (MCI) in older adults.

METHODS

210 older adult participants were recruited from community centers in the central region of Taichung City. Working memory (WM) performance in older adults was assessed during GBIT, while hemoglobin responses were measured by near-infrared spectroscopy (NIRS). Variables included oxyhemoglobin (O2Hb) and deoxyhemoglobin (HHb). Data sequences underwent a fitting procedure using a transformed cubic polynomial function. The transformed coefficients were used as predictors of a logistic regression model to recognize MCI in older adults.

RESULTS

This study confirmed the relationship between age and cognitive performance. The findings demonstrate that the NIRS cubic polynomial function trends during the GBIT test showed significant changes in older adults, increasing with age. Logistic regression analysis identified age and the orientation (coefficient a) of HHb as the main factors for recognizing MCI. The model achieved an overall precision of 83.33 % (sensitivity = 75.00 %; specificity = 84.68 %) with the formula: ln (Odds [MCI]) = -1.64 + 0.57 × HHb_a + 1.40 × age.

CONCLUSIONS

NIRS hemoglobin response characteristics during GBIT may serve as an efficient indicator of MCI in older adults. These findings may advance the field of cognitive health evaluation, resulting in earlier detection of cognitive deterioration in older adults.

Psychological Concerns Associated with Empathy in Paid and Unpaid Caregivers of Older People: A Systematic Review

OBJECTIVES

Identify associations between psychological concerns and empathy (affective and cognitive domains) in paid and unpaid caregivers of older people.

METHODS

A systematic review of the literature was conducted. Searches were performed in the Pubmed, Web of Science, PsycINFO, Scopus and Embase databases using the search terms "Empathy," "Caregiver," "Depression," "Burnout," Anxiety", Caregiver Burden" and "Psychological Stresses" and the Boolean operators "AND" and "OR." No restrictions were imposed regarding language or year of publication. This review was registered in PROSPERO (CRD42021267276).

RESULTS

Twelve articles met the inclusion criteria and were included in the present review. Most studies involved the participation of unpaid caregivers. Higher levels of empathy were associated with greater psychological concerns. Regarding affective empathy, direct associations were found with depressive symptoms, anxiety and stress. In contrast, high levels of cognitive empathy were associated with fewer depressive symptoms as well as less stress and burnout syndrome.

CONCLUSIONS

An association was found between greater affective empathy and psychological impairment in caregivers of older people. Higher levels of cognitive empathy can help minimize psychological concerns.

CLINICAL IMPLICATIONS

Working on empathic ability among caregivers of older people in different environments can contribute positively to the emotional impact of caregiving. Moreover, empathetic cognitive training among caregivers can serve as a strategy to minimize the negative consequences of the impact of caregiving.

Evaluation of a Photo Captioning Cognitive Empathy Intervention for Dementia Caregivers

OBJECTIVES

The goal of this study was to develop and evaluate an intervention aimed at increasing cognitive empathy, improving mental health, and reducing inflammation in dementia caregivers, and to examine the relevant neural and psychological mechanisms.

METHODS

Twenty dementia caregivers completed an intervention that involved taking 3-5 daily photographs of their person living with dementia (PLWD) over a period of 10 days and captioning those photos with descriptive text capturing the inner voice of the PLWD. Both before and after the intervention, participants completed questionnaires, provided a blood sample for measures of inflammation, and completed a neuroimaging session to measure their neural response to viewing photographs of their PLWD and others.

RESULTS

87% of enrolled caregivers completed the intervention. Caregivers experienced pre- to post-intervention increases in cognitive empathy (i.e. Perspective-Taking) and decreases in both burden and anxiety. These changes were paralleled by an increased neural response to photographs of their PLWD within brain regions implicated in cognitive empathy.

CONCLUSION

These findings warrant a larger replication study that includes a control condition and follows participants to establish the duration of the intervention effects.

CLINICAL IMPLICATIONS

Cognitive empathy interventions may improve caregiver mental health and are worthy of further investigation.

Empathy Training for Caregivers of Older People: A Systematic Review

OBJECTIVES

To identify empathy training models and the effects on psychological concerns in paid and unpaid caregivers of older people.

METHODS

A systematic review was conducted. Searches for relevant articles were performed in the Embase, LILACS, PsycInfo, Pubmed, Scopus and Web of Science databases using the following search strategy: "Empathy AND (Education OR Training OR Intervention) AND Caregiver." No restrictions were imposed regarding language or year of publication.

RESULTS

Empathy training for caregivers of older people were performed in six studies, three of which identified a significant increase in empathy levels and consequent reduction in psychological concerns. Empathy training focused on aspects of empathy and/or the caregiver had significant effects on the outcome variables. Moreover, training conducted online, by telephone and/or in person can generate satisfactory results. The other three studies that conducted training with a focus on aspects of dementia and/or old age did not present any effect on the outcome variables.

CONCLUSIONS

Empathy training for caregivers of older people can increase levels of this ability, especially in the cognitive domain, as well as diminish psychological concerns caused by the negative impact of providing care.

CLINICAL IMPLICATIONS

Empathy training directed at empathic abilities and/or aspects of providing care can be effective at increasing levels of this ability. Moreover, training in different care contexts can minimize the negative impacts of providing care.

Empathy and support exchanges in couples coping with early-stage Alzheimer's disease

OBJECTIVES

Research has extensively examined spousal caregiving in Alzheimer's disease (AD), but it remains unclear how people with AD help spousal caregivers. We aimed to describe emotional and practical support that people with AD and their spouses provide to each other and test the role their empathy plays in these support experiences.

METHODS

Seventy-two people with early-stage AD and their spousal caregivers independently reported empathy (personal distress, empathic concern, perspective taking) and the frequency and appraisal of support provision. Caregivers reported both partners' sociodemographic characteristics.

RESULTS

People with early-stage AD and their spousal caregivers provided support to each other often. Caregivers provided more support but people with AD appraised support provision as more pleasant and less stressful. Lower personal distress in both partners and greater caregiver empathic concern were associated with more frequent caregiver support to people with AD. Greater empathic concern and perspective taking were associated with more pleasant appraisals of helping. Personal distress was positively associated with stress of helping.

CONCLUSION

Findings describe support reciprocity in early-stage AD and debunk the myth of people with AD being only recipients of care. We identify risk and resilience in couples per empathy and inform the design of dyadic interventions to promote mutually beneficial relationships in AD.

Psychosocial experiences of caring by family caregivers of patients living with prostate cancer in a teaching hospital: A descriptive phenomenological study

AIM

This study explored the psychosocial experience of caregiving on the family caregiver of patients with prostate cancer in the Cape Coast metropolis of Ghana.

DESIGN

A descriptive phenomenological study was conducted through in-depth face-to-face semi-structured interviews. Twelve family caregivers of prostate cancer patients were selected through purposive sampling. Interviews were conducted until data saturation. All interviews were taped, transcribed verbatim and analysed thematically.

RESULTS

The family caregiver's psychosocial experience associated with caregiving uncovered two significant themes with 13 sub-themes. 'Psychological impact' emerged as the first central theme, with anxiety, care as an obligation and feelings of inadequacy, hopelessness, uncertainty, denial and concealment as the sub-themes. The second central theme was 'Social impact' with sexual concerns, role adjustment, loss of livelihood, turmoil and reduced leisure activities emerging as sub-themes.

CONCLUSION

The findings demonstrated that caring significantly impacts the psychological and social well-being of the caregivers of prostate cancer patients. Therefore, there is a need for holistic assessment to include the psychosocial well-being of family caregivers to improve quality of life. Therefore, psychiatric nurses support family caregivers through education and psychosocial interventions to improve their quality of life and enable them to care for their loved ones more effectively.

"Out of the clear blue sky she tells me she loves me": Connection experiences between caregivers and people with dementia

BACKGROUND

Dementia can impede the relationship and connection between the person with dementia (PWD) and their caregiver. Yet, caregiving in dementia also offers opportunities for connection, which has implications for caregiver and PWD well-being. In this qualitative study, we describe and characterize ways caregivers felt connected to the person with dementia they care for.

METHODS

We conducted a telephone-based survey with caregivers of people with dementia. For this paper, we analyzed responses to an open-ended question focused on when caregivers feel most connected to the person they are caring for. Responses were analyzed and coded and themes were identified through an iterative process involving a multidisciplinary team of researchers and clinicians.

RESULTS

437 caregivers participated in this study. We identified two domains of connection: activity-based and emotion-based connections. Within activity-based connections, the following themes emerged: everyday activities; reminiscing; activities of caregiving; novel experiences; and time with family and friends. Within emotional connections, the following themes emerged: expressions of love, appreciation, and gratitude; physical affection; sharing an emotion or emotional experience; and times when the PWD seems like "themself" again.

CONCLUSIONS

Findings provide insights into ways caregivers experience a sense of connection with the person they care for. There is a call to shift away from focusing on reducing stress and toward optimizing positive experiences as a way to better support caregivers' health and well-being. Interventions that leverage these insights to foster caregiver - PWD connection could lead to better health and well-being for both members of the dyad. The amplification of a positive experience may be particularly important for caregivers who are struggling with limited support or respite. Clinicians may be interested in using a question about connection as a way to more fully understand a caregiver's current experience.

Emotion-focused dyadic coping styles used by family carers of people with dementia during the COVID-19 pandemic

Emotional wellbeing of family carers and people with dementia is associated with not only how each individual copes with stress and conflict, but also by how they cope together. Finding ways to positively cope together was particularly important during COVID-19 lockdown restrictions, when other avenues of emotional support were less available. We explored how carers experienced and used emotion-focused dyadic coping styles during the COVID-19 pandemic. In-depth qualitative interviews were conducted during the pandemic with 42 family carers, supplemented by quality of life scores collected both pre- and during the pandemic and household status. Abductive thematic analysis identified five styles of emotion-focused dyadic coping: common, supportive, hostile, disengaged avoidance and protective. The COVID-19 pandemic left many dyads unsupported. While many carers adapted, reporting increases in quality of life and enjoying the extra time with the person with dementia, others experienced dyadic conflict and reductions in quality of life. This variation was associated with dyadic coping styles, including challenges in using 'positive' styles and the protective use of 'negative' disengaged avoidance in the right situations. Dyadic coping styles also differed as a function of whether the dyad lived together. As many people with dementia are supported by an informal carer, considering how they cope together could help us to better support them. We make suggestions for dyadic interventions tailored by co-residency status that could help dyads identify and communicate coping needs, reconnect following avoidance coping, and replenish their coping resources through social support.

Empathic Accuracy and Shared Depressive Symptoms in Close Relationships

Empathic accuracy, the ability to accurately understand others' emotions, is typically viewed as beneficial for mental health. However, empathic accuracy may be problematic when a close relational partner is depressed because it promotes shared depression. Across two studies, we measured empathic accuracy using laboratory tasks that capture the ability to rate others' emotional valence accurately over time: first, in a sample of 156 neurotypical married couples (Study 1; Total N=312), and then in a sample of 102 informal caregivers of individuals with dementia (Study 2). Across both studies, the association between empathic accuracy and depressive symptoms varied as a function of a partner's level of depressive symptoms. Greater empathic accuracy was associated with (a) fewer depressive symptoms when a partner lacked depressive symptoms, but (b) more depressive symptoms when a partner had high levels of depressive symptoms. Accurately detecting changes in others' emotional valence may underpin shared depressive symptoms.

Seeing it my way: A perspective taking intervention alleviates psychological distress in caregivers of autistic children

Cognitively empathic caregivers are able to take the perspective of their autistic child(ren) without experiencing vicarious distressing emotions, and typically report lower psychological distress. Taking the perspective of the autistic child might, through fostering cognitive empathy, might relieve caregivers' psychological distress. Here we explored whether autism perspective taking videos developed by the National Autistic Society (NAS), intended to raise public awareness about autism, might be effective, packaged as an intervention, for increasing caregivers' cognitive empathy and reducing their psychological distress. A sample of 24 caregivers of autistic children completed questionnaires capturing psychological distress and cognitive empathy at baseline. For three consecutive days, for two-three minutes per day, caregivers watched perspective taking videos. Follow up assessments were collected 7, 14, and 21 days post intervention. Psychological distress was lower after seven days, and stayed lower 14 and 21 days post intervention compared with baseline. Cognitive empathy was higher after 14 days, and remained higher 21 days post intervention compared with baseline. Taking the perspective of the autistic child, achieved here with publically available NAS videos, seems to be effective for increasing caregivers' cognitive empathy and reducing their psychological distress for up to three weeks. Future research might use more rigorous methodologies, incorporating control groups and larger samples, to explore moderators of intervention efficacy.

Do positive emotions prompt people to be more authentic? The mediation effect of gratitude and empathy dimensions on the relationship between humility state and perceived false self

Background

Gratitude, empathy and humility have been defined as personality dispositions, as complex interpersonal emotions, and as states that prompt people to be more pro-social. However, studies on the associations between these emotions and authen-ticity are scarce. The main purpose of this study was to analyze the mediation effect of gratitude and empathy on the asso-ciation between humility and perceived false identity.

Participants and procedure

The number of participants who took part in the survey was equal to 220 university students (91% female). Students com-pleted questionnaires concerning humility (BSHS scale), gratitude (GQ scale), empathy (QCAE inventory), and perceived false self (POFS scale).

Results

The results confirmed significant correlations between gratitude, empathy and authenticity, but not with humility. Further analysis revealed that gratitude and affective and cognitive empathy explain 9% of the perceived false identity level. The findings confirmed the mediation effect of gratitude on the associations between (1) humility and false self, (2) affective empathy and false self, but not between cognitive empathy and false self. The results also indicated that humility may in-fluence authenticity indirectly via gratitude, but not via dimensions of empathy.

Conclusions

The findings confirm the significance of gratitude and cognitive empathy as dispositions that promote a feeling of being authentic. On the other hand, the relationship between affective empathy and false self was positive.

Positive and negative ways that informal caregivers are affected by weight and weight management efforts for care recipients with spinal cord injury

PURPOSE

To understand how informal caregivers are affected by weight and weight management of care recipients with SCI.

MATERIALS AND METHODS

In-depth qualitative interviews were conducted with 24 informal caregivers of community-dwelling Veterans and civilians with SCI. Thematic analysis was conducted.

RESULTS

Three themes described how the care recipient's weight management efforts impacted the caregiver, including: (1) motivation and involvement in weight management efforts for themselves, (2) emotional well-being (positive and negative aspects), and (3) physical tasks (both ease and burden). Caregivers may experience emotional and/or physical burden by taking on extra caregiving tasks to help with care recipient's weight management. Caregivers also may experience positive impacts from the care recipient's weight management efforts, regardless of who drove the efforts, including improvement in their own motivation and involvement in weight management, enhanced emotional well-being (happiness for and with the care-recipient), and making physical caregiving tasks easier.

CONCLUSIONS

Rehabilitation providers can use these findings to educate dyads about potential impacts of weight management efforts for the care recipient, specifying areas that may cause burden but emphasizing the potential benefits for both recipient and caregiver. Integrating this education into rehabilitation practice may reduce overweight-related problems with function and declines in disability among dyads.Implications for RehabilitationInformal caregivers experience both positive and negative consequences with regard to weight management for individuals with SCI.Helping their loved one with weight management can facilitate informal caregivers' involvement in their own weight management activities.Findings may offer guidance to healthcare and rehabilitation providers as they incorporate weight management into education programs for informal caregivers of persons with SCI.Integrating this education into rehabilitation practice may reduce or delay overweight-related problems with function and declines in disability among dyads.

The effects of empathy by caregivers on healthcare service satisfaction

Healthcare service satisfaction focuses not only on the patients but also on the caregivers' perspectives. This study explored how caregivers' empathy toward patients affects their satisfaction with healthcare services through an electroencephalography (EEG) experiment. EEG mu rhythm was used as the neural indicator to reflect empathy. The results showed that empathy reduces caregivers' evaluation of healthcare service satisfaction because they share suffering with the patients. However, implementing physician-patient communication through a process-based informed consent (IC), compared to an event-based IC, can effectively alleviate such adverse effects.

Experiences of family caregivers of patients with post-traumatic hydrocephalus from hospital to home: a qualitative study

Background

Post-traumatic hydrocephalus (PTH) is a complication of traumatic brain injury (TBI) that requires treatment and postoperative care. The shunt is one of the main treatments for PTH, which presents with dysfunction and infection. Considering brain injury, hydrocephalus shunt malfunction, and infection, family caregivers need to be responsible for caring for PTH patients, recognizing shunt malfunction and infection, and managing those patients accordingly from hospital to home. Understanding the experiences and needs of caregivers is beneficial for knowing their competency and quality of health care, ameliorating and ensuring future transition care. The study aimed to explore the feelings, experiences, and needs of family caregivers when caring for patients with TBI, PTH and shunts.

Methods

This was exploratory research of a purposive sample of 12 family caregivers of adult patients with TBI, PTH and shunts in five neurosurgery departments at a general hospital in Zhengzhou, Henan Province, China, using a semi-structured interview method. Data were collected from October 2021 to March 2022 before being analyzed by content analysis methods.

Results

Caregivers required professional and social knowledge and support in the areas of TBI, PTH and shunts, caregiving interventions, psychological care needs, and health insurance, just as caregivers do, but unlike other general caregivers, care for patients with TBI, PTH, and shunt is fraught with uncertainty and the need to manage shunt setting, and caregivers often experience 'complex emotional reaction' during the transitional period, where care needs and complex emotions may lead to a lack of caregiver confidence, which in turn may affect caregiving behaviors, and experiences that affect care may be mediated through caregiving confidence. The perceived availability of resources, particularly those that are still available to them when they return home, has a significant impact on participants' emotional response and sense of confidence.

Conclusions

The emotional response and the impact of stressor caregivers after TBI, PTH, and shunt was important, and sometimes confidence in care appeared to be an intermediate and useful factor that needed to be considered as health professionals prepared to develop care resources on how to manage and empower patients with TBI, PTH, and shunt. Meanwhile, there may be gaps and inequities in supportive care for patients diagnosed with TBI, PTH, and shunt in China.

Does emotional empathy moderate the association between caregiver burden and burnout among Arab family caregivers of older relatives?

The purpose of this study was to examine the associations between caregiver's burden and three components of burnout (emotional exhaustion, depersonalisation, and sense of personal accomplishment) among family caregivers, as well as the moderating effects of emotional empathy on these associations. We conducted a cross-sectional study of 300 informal caregivers caring for their elderly relatives in the Arab community in Israel, using face-to-face structured interviews in Arabic. Three hierarchical regressions were applied to examine the factors related to each of the burnout components. Additional bootstrapping with resampling strategies was used to test the moderation effects of emotional empathy. The results showed positive correlations between caregiver's burden and two burnout components, emotional exhaustion and depersonalisation, but not with personal accomplishment. Greater emotional exhaustion and depersonalisation levels were related to higher emotional empathy. Perceived social support is linked negatively with emotional exhaustion and depersonalisation levels, and positively with personal accomplishment. In addition, emotional empathy emerged as a moderator in the associations between caregiver burden and two components of burnout: emotional exhaustion and depersonalisation. Interventions for familial caregivers should aim to heighten social support and to educate caregivers on effectively regulating their emotional empathy to reduce caregiver's burden and burnout.

Lower activity linkage between caregivers and persons with neurodegenerative diseases is associated with greater caregiver anxiety

Physiological linkage refers to the degree to which two individuals' central/peripheral physiological activities change in coordinated ways. Previous research has focused primarily on linkage in the autonomic nervous system in laboratory settings, particularly examining how linkage is associated with social behavior and relationship quality. In this study, we examined how linkage in couples' daily somatic activity (e.g., synchronized movement measured from wrist sensors)-another important aspect of peripheral physiology-was associated with relationship quality and mental health. We focused on persons with neurodegenerative diseases (PWNDs) and their spousal caregivers, whose linkage might have direct implications for the PWND-caregiver relationship and caregiver's health. Twenty-two PWNDs and their caregivers wore wristwatch actigraphy devices that provided continuous measurement of activity over 7 days at home. PWND-caregiver activity linkage was quantified by the degree to which activity was "in-phase" or "anti-phase" linked (i.e., coordinated changes in the same or opposite direction) during waking hours, computed by correlating minute-by-minute activity levels averaged using a 10-min rolling window. Caregivers completed well-validated surveys that assessed their mental health (including anxiety and depression) and relationship quality with the PWND. We found that lower in-phase activity linkage, but not anti-phase linkage, was associated with higher caregiver anxiety. These dyad-level effects were robust, remaining significant after adjusting for somatic activity at the individual level. No effects were found for caregiver depression or relationship quality. These findings suggest activity linkage and wearables may be useful for day-by-day monitoring of vulnerable populations such as family caregivers. We offered several possible explanations for our findings.