Work

Physiological Linkage and Caregiver Mental Health and Well-Being in Dementia Care Dyads

Year: 2025

Type: article

Abstract: When people share emotions (e.g., laughing together), their physiological responses can become momentarily “linked” (i.e., changing in coordinated ways)—a phenomenon referred to as “physiological linkage”. Reduced physiological linkage has been observed in social interactions between people with dementia (PWD) and their family caregivers. To expand this work, in two independent samples of caregiver-PWD dyads, we examined the relationship between physiological linkage—measured in laboratory and real-world settings—and caregiver mental health and well-being. In study 1, 64 dyads had a 10-minute conversation about an area of disagreement in the laboratory with six measures of physiological responses continuously monitored. In study 2, 22 dyads wore wristwatch devices in their homes that provided a continuous measure of one physiological measure (activity) over seven days. Physiological linkage was computed as the covariation of dyads’ physiological responses during the conversation (Study 1) or waking hours (Study 2). Caregivers reported their emotional well-being (Study 1) and anxiety symptoms (Study 2) using well-established questionnaires. Findings revealed that lower physiological linkage in the laboratory was associated with lower caregiver emotional well-being (r = 0.27, p = .03). Similarly, lower physiological linkage in the home was associated with higher caregiver anxiety (r = -.48, p = .02). Findings remained statistically significant after accounting for individual-level physiological responses. We believe that caregiver-PWD dyads with lower physiological linkage may have weaker emotional connections, which can increase vulnerability in caregivers to declines in mental health and well-being.

Source: Innovation in Aging

DOI: 10.1093/geroni/igaf122.2105

Authors: Kuan-Hua Chen, Casey Brown, Alice Verstaen, James Casey, Jennifer Merrilees, Robert Levenson

Institutions: University of Nebraska Medical Center, Georgetown University, University of California, Berkeley, University of California, San Francisco

Language: English

Topic: Dementia and Cognitive Impairment Research

Subfield: Psychiatry and Mental health

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $3,977