Gerontology Commons^™

The Most Age-Diverse Society In Our Country's History, Cal J. Halvorsen, Logan Fox, Tim B. Zielonko

Harvey A. Friedman Center for Aging

The public narrative is that the United States population is getting older. This is, indeed, true. We have more people over age 50 than we have ever had in our country—both in total numbers and in the share of the population. The numbers of older people will continue to grow, all the way up until the projections stop at the year 2100. Many have asked, “What will we do with all of these older people?”

Community Programs That Build Connection, Jihye Baek, Cal J. Halvorsen

Harvey A. Friedman Center for Aging

Social connection is a fundamental human need and a critical driver of individual health and well-being. When older adults maintain stable, supportive relationships, they experience significantly better physical, mental, and cognitive health outcomes. In response to growing evidence of its public health impact, the World Health Organization (WHO) designated social connection as a global public health priority, and the U.S. Surgeon General issued an Advisory calling for action to address the loneliness epidemic.

Beyond The Generations: Building A High-Quality Workplace For An Age-Diverse Workforce, Cal J. Halvorsen, Bruna C. Lopez, Erika Sabbath

Brown School Faculty Publications

At a time when the U.S. is more age diverse than ever before, Americans are extending their careers for financial stability, social connection, and purpose. This article provides a brief background on the history of aging and work, from the late 1800s to present, illustrating the influence that public and organizational policies, as well as personal needs and interests, have on labor force participation. It then provides examples for how employers can create better workplaces for people of all ages, concluding with the case for why more age-inclusive workplaces lead to better results for employees, their families, and their employers.

How Do Social Isolation And Loneliness Vary By Age?, Jihye Baek, Cal J. Halvorsen

Harvey A. Friedman Center for Aging

Social isolation and loneliness, which are experienced by many older adults, can negatively impact health and well-being. Although often used interchangeably, social isolation is defined as an objective lack of social ties (e.g., number of close family members or friends) and loneliness as an internal sense of disconnection (e.g., feeling alone even when surrounded by others). Because social relationships, health, and life circumstances change as we age, patterns of social isolation and loneliness may differ by age group. Therefore, this research brief asks, How do patterns of social isolation and loneliness differ across age groups among community-dwelling older adults? 

Does The Impact Of Volunteering On Health Differ By Wealth? [Research In Brief: Volunteering], Seoyoun Kim, Cal J. Halvorsen

Harvey A. Friedman Center for Aging

Volunteering among older adults has many potential health benefits; however, older adults with more wealth are also more likely to volunteer in the first place, raising the question of whether they are the ones reaping the most benefits. This study asked two questions: (1) Does formal volunteering improve self-reported health and reduce depressive symptoms in older adults? (2) Does the impact of volunteering on these outcomes differ between older adults in the lowest and highest wealth quintiles?

Financial Well-Being Among Self-Employed Older Americans, Cal J. Halvorsen, Byeongju Ryu

Harvey A. Friedman Center for Aging

As people live longer, there has been growing attention in recent years on extending working lives. Although many older adults fully retire, those who continue to work often turn to self-employment—a broad category that includes entrepreneurs, small business owners, consultants, contractors, gig workers, and people who take on side jobs. Rates of self-employment rise sharply with age, with nearly 30 percent of employed adults in their 70s working for themselves—approximately twice the share of those in their 60s.

Preventing, Delaying, And Managing Chronic Disease, Michele Dinman, Logan Fox

Harvey A. Friedman Center for Aging

We are living longer. Today, men and women who reach age 65 will live another 17 to 20 years, on average. As the human body ages, normal biological changes increase vulnerability to illness, and the risk of developing disease increases. At the same time, advances in public health, medicine, and health care have reduced deaths from acute conditions, like infection and accidents, and have increased our chances of living longer into the human life span. Thus, we now have greater chances of developing one or more chronic diseases. Most (75%) adults in the U.S. live with at least one chronic …

Being A Caregiver For A Friend Or Family Member, Nancy Morrow-Howell, Michele Dinman

Harvey A. Friedman Center for Aging

Informal caregivers give assistance to family and friends who have functional limitations that challenge self-care. Most often, caregivers assist younger adults living with a disability and older people with age- associated chronic conditions. Family caregivers are the backbone of our long-term care system in this country, delivering 80% of care. Caregiving is increasing as people live longer with more chronic conditions. Indeed, caregiving is the new norm in our older society. As Roselyn Carter said: "There are only four kinds of people in the world. Those who have been caregivers, those who are currently caregivers, those who will be caregivers, …

Lifelong Civic Engagement, Logan Fox, Emma Ward, Cal J. Halvorsen

Harvey A. Friedman Center for Aging

Civic engagement can be broadly defined as the practice of service (volunteering or informal helping), advocacy, and political participation (voting). Older adults are a large and growing population that frequently engages in these civic activities.

In 2022, the Bureau of Labor Statistics reported that approximately one quarter of the 11 million daily volunteers in the U.S. were age 65 and older. Between 2018 and 2021, there was a 10% increase in volunteer hours filled by individuals over age 65. Research shows this trend will be mutually beneficial, improving the quality of life for older adults who are, in turn, positively …

Climate Change And Population Aging, Anastasia Rhule, Michele Dinman, Natalie Galucia

Harvey A. Friedman Center for Aging

Glaciers are shrinking, river and lake ice is melting earlier, plant and animal habitat ranges are changing, and trees and flowers are blooming earlier. Additionally, longer and more severe heat waves are occurring. Droughts, wildfires, and extreme rainfall are happening at a faster rate than previously predicted by scientists.

Living Longer, Working Longer, Michele Dinman, Cal J. Halvorsen

Harvey A. Friedman Center for Aging

According to the Pew Research Center, nearly one-in-five Americans ages 65 and older (19%) were employed in 2023, a rate nearly twice that from 35 years ago. They’re also working more hours, on average, than in the recent past. In fact, more than three-in-five older workers (62%) work full time, an increase from the 47% working full time in 1987. Older workers today are also more educated and are more likely to be receiving employer-sponsored benefits, such as retirement savings plans and health insurance, than in earlier decades. While only 4% of the entire labor force was made up of …

Driving And Beyond, Michele Dinman, Nancy Morrow-Howell

Harvey A. Friedman Center for Aging

Transportation is a daily necessity in our lives, and many of us rely on driving our own automobile to get where we need to go. According to the Federal Highway Administration, in 2023 there were approximately 35 million licensed drivers aged 70 and older—fewer drivers than younger age groups and a group that drives fewer miles.

The Covid-19 Pandemic’S Effects On Older People, Michele Dinman, Morgan Van Vleck

Harvey A. Friedman Center for Aging

The COVID-19 pandemic has had wide ranging effects on people of all ages. In many respects, older people had the same experiences as younger people, but there were some aspects of the pandemic unique to the older population. While COVID-19 cases have been equal among different age groups, older people experienced a greater number of hospitalizations and deaths compared to younger people.

Living With Purpose, Michelle Dinman, Cal J. Halvorsen, Nancy Morrow-Howell

Harvey A. Friedman Center for Aging

Having purpose is good for all of us at any age. Patrick Hill, Professor of Psychological and Brain Sciences at WashU, defines purpose as the “notion that you have daily activities you find meaningful or engaging and that give you direction for your life [and] reasons to continue going.” In a major sense, purpose can be described as the why of living, instead of the how.

Housing Options As We Age, Michele Dinman, Jeff Brandt, Logan Fox

Harvey A. Friedman Center for Aging

Almost 75% of adults ages 50 and older want to stay in their homes and communities as they age. This is referred to as “aging in place.” Our homes and communities can help us feel safe and give us a sense of belonging and connection. Furthermore, our living situations effect our health and quality of life as well as our ability to live independently. Changes in our physical, psychological, social, and financial well-being later in life can affect our abilities to age in place. Finding the best housing based on our resources, interests, and needs is important for living well …

Job-Training Programs For Older Americans, Byeongju Ryu, Cal J. Halvorsen

Harvey A. Friedman Center for Aging

The traditional notion of retirement—stopping work completely to focus on personal pursuits in one’s golden years—is not guaranteed. In the United States, three in four adults plan to work past age 65. Many older adults continue working due to financial necessity, including rising healthcare costs, insufficient retirement savings, and gaps in pension coverage. Low-wage workers, in particular, may struggle to retire at all, forced to keep working to afford basic necessities such as housing and food. Older adults also seek employment for their personal health and well-being, such as staying physically and mentally active, finding a sense of purpose, and …

Older Adults And Financial Exploitation, Aaron Li, Natalie Galucia, Cal J. Halvorsen

Harvey A. Friedman Center for Aging

The National Adult Protective Services Association defines elder financial exploitation as misuse, mishandling, or exploitation of an older adult’s property, possession, or assets. These actions often occur without consent and are typically carried out through false pretense, undue influence, coercion, or manipulation.

Supporting Employed Informal Caregivers, Michele Dinman, Natalie Galucia, Cal J. Halvorsen

Harvey A. Friedman Center for Aging

More than 53 million Americans are informal caregivers. These family members, friends, and acquaintances provide social, medical, transportation, and other support to individuals because of illness or disability without getting paid. Additionally, at least 2 million grandparents, not counting other kinship caregivers, provide care for children who cannot remain with their parents.1

How Do Self-Employment Rates Change Across The Lifespan?, Cal J. Halvorsen, Bruna C. Lopez

Harvey A. Friedman Center for Aging

People pursue self-employment for a variety of reasons, including autonomy, the ability to pursue their own goals, and income. Yet for many older people who are not yet eligible for Social Security retirement benefits, which can begin at age 62, or Medicare, the U.S. health insurance program that generally begins at age 65, self-employment is also associated with less health insurance and retirement savings program coverage. 1,2 3,4

This research brief asks, What is the proportion of Americans who are self-employed, and how do these rates change throughout the life course?

Ageism In Employment, Aaron Li, Natalie Galucia, Cal J. Halvorsen

Harvey A. Friedman Center for Aging

The World Health Organization defines ageism as stereotypes, prejudice, and discrimination directed at individuals based on their age. As people remain in the labor force longer, they are increasingly exposed to ageist attitudes and discrimination. Ageism often manifests through negative assumptions about older workers’ abilities, adaptability, and value in the workplace. Older workers are frequently perceived as less competent, resistant to new technology, inflexible, or physically and mentally less capable.

Mental Health Challenges In Later Life, Sophie Mauk, Michele Dinman, Natalie Galucia, Cal J. Halvorsen

Harvey A. Friedman Center for Aging

Although older adults are less likely to be diagnosed with mental health challenges than younger adults, Americans over the age of 65 have experienced the greatest growth in new diagnoses — an increase of 57% between 2019 and 2023. By 2023, about 1 in 7 adults age 51 and older had received mental health diagnoses, including major depressive, generalized anxiety, adjustment, bipolar, and mood disorders. However, older adults are less likely to receive treatment than younger people. At the same time, older adults may also misuse substances such as alcohol, tobacco, cannabis, and prescription and nonprescription medications. Americans age 75 …

Letter To Congress From Harvey A. Friedman Center For Aging, June 24, 2025, Ernest Gonzales, Cal J. Halvorsen, Nancy Morrow-Howell

Harvey A. Friedman Center for Aging

Letter to Members of Congress: We are gerontological social work researchers with expertise in productive aging; that is, activities that produce goods or services for society, whether paid for or not. We mainly focus on risk and protective factors to employment, caregiving, and volunteering in later life, and the many health, economic, and social outcomes.

Attached are peer reviewed scientific journal articles and policy briefs that underscore the importance of social policies that enable older adults to contribute to society through productive aging. In simple terms, increasing opportunities for older adults to remain productively engaged through work, volunteering, and caregiving …

Approaches To Charitable Giving And Perceptions Of Organizational Effectiveness Among Midlevel Donors, Cal J. Halvorsen, Johanna Lynch, Sylvia Brown, Melissa L. Mcternan

Harvey A. Friedman Center for Aging

For decades, scholars have devoted attention to identifying the giving habits of charitable donors, yet the behaviors of midlevel donors have not been independently considered. This study examined midlevel donors’ approaches to charitable giving and the extent to which they give to effective organizations. Operationalized as giving between $2,000 and $20,000 annually, we analyzed descriptive statistics and multivariate probit models of 1,260 midlevel donors using a novel study. We found that respondents were least likely to engage in ad-hoc giving and most likely to give to organizations due to personal connections or prior research. However, while caring about a cause …

The Cogenerate Innovation Fellowship: Supporting Leaders Of Intergenerational Initiatives, Cal J. Halvorsen, Eunice Lin Nichols, Janet Oh

Harvey A. Friedman Center for Aging

This Case Report provides a detailed overview of the CoGenerate Innovation Fellowship, a 9-month fellowship that supports leaders of intergenerational initiatives developed by the national nonprofit organization, CoGenerate. It describes the Fellowship’s recruitment and cohort development strategies, monthly meetings and community-building efforts, end-of-Fellowship celebration, and post-Fellowship support. It summarizes findings from the two-year pilot’s process and outcomes evaluation and provides recommendations to individuals and organizations seeking to support social sector innovators who are leading intergenerational initiatives.

Encore Intergenerational Vaccine Corps (Pre- And Post-Service Survey: Topline Results), Halvorsen J. Cal, K. Megan Collier

Brown School Faculty Publications

Between May 2021 and April 2022, volunteers with the Encore Intergenerational Vaccine Corps were asked to complete a pre-service survey upon joining and post-service survey upon exiting the program. (Those still volunteering in April 2022 were asked to complete the post-service survey.) The primary objective of these surveys was to assess changes in how volunteers viewed people from different generations after their experiences in this intergenerational volunteer program. Secondary objectives included changes in engagement with people from other generations and views on public policy, public health, and social issues. Volunteers’ experiences in the program were also assessed in the post-service …

How The Senior Community Service Employment Program Influences Participant Well-Being: A Participatory Research Approach With Program Recommendations, Cal J. Halvorsen, Kelsey Werner, Elizabeth Mccolloch, Olga Yulikova

Harvey A. Friedman Center for Aging

The federal Senior Community Service Employment Program (SCSEP) provides on-the-job training to people 55 years and older with incomes at or below 125% of the federal poverty level with multiple barriers to employment. This study examined the processes by which SCSEP may influence participant financial, physical, and mental well-being. We engaged 15 SCSEP participants and case managers over four virtual and one telephone session using a participatory research method called community-based system dynamics. Activities included identifying key problem trends, variable elicitation, developing a causal map, and identifying changes to the system to increase participant well-being. Respondents identified how individual, organizational, …

Aging In Nigeria: A Growing Population Of Older Adults Requires The Implementation Of National Aging Policies, Kingsley Chima Mbam, Cal J. Halvorsen, Uzoma Odera Okoye

Harvey A. Friedman Center for Aging

While the continent of Africa currently has the lowest share of adults aged 60 and older in its population among all world regions, the total number of older Africans is projected to triple between 2020 and 2050. Nigeria—Africa’s leading economy and most populated country—has the highest number of older people in the continent and the 19th highest across the globe, with the population of Nigerians aged 65 and older projected to nearly triple by 2050. However, the increase in older Nigerians is occurring against the backdrop of extreme poverty, unsolved development problems, socioeconomic inequality, the HIV/AIDS epidemic, and a decline …

A Nationally Representative Dataset Of 1,549 Americans Aged 18 To 94 On Interest In, Experience With, And Barriers To Cogeneration, Defined As Working With Older And Younger People For Social Good, Cal J. Halvorsen, Bruce Kelley, Jim Emerman, Stefanie Weiss, David Gleicher, Jacob Stolmeier, Mark Lush

Harvey A. Friedman Center for Aging

This dataset focuses on Americans’ interest in, experience with, and perceived barriers to working with members of other generations to improve the world around them. It includes responses from a March 2022 survey of 1,549 people between the ages of 18 and 94 who lived in the U.S. using the NORC at the University of Chicago AmeriSpeak® Panel. To increase the representativeness of the sample, the survey was offered both online and by phone. The sample is drawn from a probability-based panel designed to be representative of the U.S. household population. Questions focused on respondents’ efforts (paid or volunteer) to …

An Encore In Social Work? How Our Schools Can Become More Age Inclusive, Cal J. Halvorsen, Erin Emmanuel

Harvey A. Friedman Center for Aging

At a time when the number of younger students entering our colleges and universities is stagnant and the number of older people in our society continues to grow by the millions, schools of social work have an opportunity to broaden their student base by intentionally including people past midlife. This commentary argues that we must recruit and retain “encore students”—defined as those aged 35 and older—in our social work programs for schools, students, the profession, and society. It covers key demographic changes in the U.S. and their relation to social work programs, the importance of multigenerational classrooms, interest in encore …

Microrna Gene Expression States Underlying Individual Variation In Aging And Lifespan In Isogenic C. Elegans, Holly Kinser

McKelvey School of Engineering Graduate Student Theses & Dissertations

Average lifespan differs greatly between species, but lifespan among same-species individuals is also highly variable. While much effort has been devoted to uncovering longevity-associated traits and lifespan-extending perturbations in humans and model organisms, how differences in lifespan arise between individuals is unknown. Studies of human identical twins demonstrate that surprisingly little of the variation in lifespan between individuals can be explained by genetics and shared environment. Furthermore, even genetically identical C. elegans reared in highly homogeneous environments display a degree of variability in lifespan similar to that of outbred human populations. Thus, longevity must be determined at least in part …