HRS Bibliography

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Author: Cal Halvorsen

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2026

Does Volunteering Give an Extra Health Boost? Volunteering and Hypertension Risk Among Insured and Uninsured U.S. Adults in Late Midlife

Byeongju Ryu, Seoyoun Kim, Koichiro Shiba, Cal Halvorsen

Brown School Faculty Publications, 2026

Association between Helping Behaviors and Epigenetic Aging: Findings from the United States and Northern Ireland

Seoyoun Kim, Claire Potter, Cal Halvorsen, Claire Hill, Laura Smyth, Angela Scott, Gareth McKay, Frank Kee, Bernadette McGuinness, Amy-Jayne McKnight, Eileen Crimmins, Jessica Faul

SSM - Population Health, 2026

2025

Does volunteering reduce epigenetic age acceleration among retired and working older adults? Results from the Health and Retirement Study.

Seoyoun Kim, Cal Halvorsen, Claire Potter, Jessica Faul

Soc Sci Med, 2025

Reducing Hypertension Through Volunteering? Investigating the Potential Causal Link Between Volunteering Frequency and Blood Pressure by Gender, Race, and Age Groups.

Seoyoun Kim, Koichiro Shiba, Cal Halvorsen

Biopsychosoc Sci Med, 2025

2024

VOLUNTEERING AND EPIGENETIC AGE AMONG RETIRED AND WORKING OLDER ADULTS: EVIDENCE FROM HEALTH AND RETIREMENT STUDY

Seoyoun Kim, Cal Halvorsen, Claire Potter

2024

2023

Volunteering and Changes in Cardiovascular Biomarkers: Longitudinal Evidence from the Health and Retirement Study

Seoyoun Kim, Cal Halvorsen, Sae Han

Innovation in Aging, 2023

An outcome-wide analysis of the effects of diagnostic labeling of Alzheimer's disease and related dementias on social relationships.

Takashi Amano, Cal Halvorsen, Seoyoun Kim, Addam Reynolds, Clara Scher, Yuane Jia

Alzheimers & dementia: the journal of the Alzheimer's Association, 2023

2021

How Self-Employed Older Adults Differ by Age: Evidence and Implications From the Health and Retirement Study

Cal Halvorsen

The Gerontologist, 2021

Volunteering as an Equalizer: A Quasi-Experimental Study Using Propensity Score Analysis

Seoyoun Kim, Cal Halvorsen

American Journal of Preventive Medicine, 2021

2020

Three fast facts: Self-employment trends among older Americans

Cal Halvorsen, Jacquelyn James

Self-employment brief, Center on Aging & Work at Boston College, 2020

Google Scholar

2018

Self-employment in later life: Implications for financial, physical, and mental well-being

Cal Halvorsen

Social Work, Washington University in St. Louis, 2018