Nan Lu (PhD) is an associate professor of the Department of Social Work and Social Policy, School of Sociology and Population Studies, Renmin University of China. His research mainly focused on social capital and healthy aging, long-term care systems, family caregiving for older adults with disabilities, age-friendly community, older volunteering, intergenerational relationship, and program evaluation. He serves as an editorial board member of Aging & Mental Health, BMC Geriatrics, Journal of Applied Gerontology, and Research On Aging. He also serves as the secretary general of China Association for Social Work Education - Gerontological Social Work Committee, and honorary research fellow of Sau Po Centre on Ageing, The University of Hong Kong.

• The significance of Loneliness in later life in the context of COVID-19 pandemic.- How to understand loneliness in later life?.- Social capital and loneliness.- The moderating role of age and gender in the relationship between social capital and loneliness.- The moderating role of marital status and living alone in the relationship between social capital and loneliness.- The role of social capital in affecting loneliness among older adults with different socioeconomic status.- The role of social capital in affecting loneliness among older adults with different physical health status.- The mechanism linking structural social capital, cognitive social capital and loneliness.- Implications of the findings and conclusions.

Nan Lu (PhD) is an associate professor of the Department of Social Work and Social Policy, School of Sociology and Population Studies, Renmin University of China. His research mainly focused on social capital and healthy aging, long-term care systems, family caregiving for older adults with disabilities, age-friendly community, older volunteering, intergenerational relationship, and program evaluation. He serves as an editorial board member of Aging & Mental Health, BMC Geriatrics, Journal of Applied Gerontology, and Research On Aging. He also serves as the secretary general of China Association for Social Work Education - Gerontological Social Work Committee, and honorary research fellow of Sau Po Centre on Ageing, The University of Hong Kong.

• The significance of Loneliness in later life in the context of COVID-19 pandemic.- How to understand loneliness in later life?.- Social capital and loneliness.- The moderating role of age and gender in the relationship between social capital and loneliness.- The moderating role of marital status and living alone in the relationship between social capital and loneliness.- The role of social capital in affecting loneliness among older adults with different socioeconomic status.- The role of social capital in affecting loneliness among older adults with different physical health status.- The mechanism linking structural social capital, cognitive social capital and loneliness.- Implications of the findings and conclusions.

Nan Lu (PhD) is an associate professor of the Department of Social Work and Social Policy, School of Sociology and Population Studies, Renmin University of China. His research mainly focused on social capital and healthy aging, long-term care systems, family caregiving for older adults with disabilities, age-friendly community, older volunteering, intergenerational relationship, and program evaluation. He serves as an editorial board member of Aging & Mental Health, BMC Geriatrics, Journal of Applied Gerontology, and Research On Aging. He also serves as the secretary general of China Association for Social Work Education - Gerontological Social Work Committee, and honorary research fellow of Sau Po Centre on Ageing, The University of Hong Kong.

• The significance of Loneliness in later life in the context of COVID-19 pandemic.- How to understand loneliness in later life?.- Social capital and loneliness.- The moderating role of age and gender in the relationship between social capital and loneliness.- The moderating role of marital status and living alone in the relationship between social capital and loneliness.- The role of social capital in affecting loneliness among older adults with different socioeconomic status.- The role of social capital in affecting loneliness among older adults with different physical health status.- The mechanism linking structural social capital, cognitive social capital and loneliness.- Implications of the findings and conclusions.