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The 500 Family Study [1998-2000: United States] (ICPSR 4549)

Released/updated on: 2008-06-03
Geographic coverage: United States
Time period: 1998-02-01--2000-06-01

The 500 Family Study was designed to obtain in-depth information on middle class, dual-career families living in the United States. To understand the complex dynamics of today's families and the strategies they use to balance the demands of work and family, over 500 families from 8 cities across the United States were studied. To address different issues facing parents with older and younger children, families with adolescents and families with kindergartners were included in the sample. Working mothers and fathers are now splitting their time between their responsibilities to their family, and to their respective occupations. This study of 500 families explores how work affects the lives and well-being of parents and their children.

The study's data allows researchers to explore a broad range of questions:

  • How do dual-career families manage and organize their resources and time between family and work?
  • How do work conditions, including characteristics of the job and workplace environment, affect the quality of relationships among household members?
  • How do dual career parents manage the moral and social development and learning experiences of their children?
  • How do the work-related responsibilities of working parents affect their child's moral, social, and educational development?
  • What effect is consumerism and technology having on how working families direct the moral and social development of their children?
  • What do parents believe is their role regarding the child-care of their children and how they should fulfill that role both in terms of time and in the allocation of economic and social resources? What are some of the resources in the community that parents use to supervise their children?
  • How do families regard the "free time" of adolescents and how they allocate adolescent "free time" in maintenance of the household?
  • What is the quality of relationships among family members?

To obtain a detailed picture of work and family life, mothers, fathers, and their children were asked to complete a series of instruments including surveys, in-depth interviews, and time diaries. These instruments were designed to provide information about work, marriage, child care and parental supervision, management of household tasks, time allocations, coping strategies, and psychological well-being.

The four datasets associated with this data collection are summarized below:

  1. The Cortisol Data contains information for a subsample of families that elected to participate in a study of psychological stress. Parents and teenagers who agreed to participate completed an additional two days of ESM data collection. The health survey that was administered reported on a variety of health and lifestyle issues that might affect cortisol (stress hormone) levels such as medication use, consumption of caffeine and alcohol, use of nicotine, timing of menstrual cycle, pregnancy, presence of chronic illness, and respondent's height and weight. Additionally, parents reported on the health of the children (teenagers and kindergartners) participating in the study.
  2. The Experience Sampling Method (ESM) Data contains a variety of information related to how individuals spend their time, who they spent it with, and what activities they were engaged in over the course of a typical week. Respondents wore programmed wrist watches that emitted signals (beeps) throughout the day. When possible, family members were placed on identical signaling schedules to provide information on a range of family activities. At the time of each beep, participants were asked to complete a self-report form which asked them to answer a number of open-ended questions about their location, activities, who they were with, and psychological states. Several Likert and semantic-differential scales were used to assess participants' psychological states.
  3. The Parent Data contains basic demographic information from respondents as well as detailed information about parents' occupation job duties, income, work schedule, benefits (e.g., medical care, flexible work schedules, and family leave), and the consequences of their jobs (e.g. long hours, job stress, having to work weekends). Additionally, the data contain information about the extent to which parents experienced work-family conflict and what changes might help with better balance of the demands of work and family (e.g., more flexible work hours, more help from spouses with household and child care responsibilities, improved child care, and after-school care arrangements). Parental attitudes toward traditional arrangements, how household tasks were actually divided among family members, and how often the family paid for services (e.g., cleaning, yard work, meal preparation) were also captured. The data also contain information about how children are socialized in families with two working parents. Topics about the frequency with which parents engaged in various activities with their children (e.g., talking, eating meals together, attending religious services), how frequently parents monitored their teenager's activities, and how often they talked with their teenager about school activities, plans for college, career plans, friendships, and peer pressure.
  4. The Adolescent Data contains data for sixth through twelfth graders, which focuses on family relationships and experiences, school experiences, paid work, psychological well-being and behavioral problems, and plans for the future (e.g., college, career, and marriage -- including expectations regarding spouses' sharing of responsibility for child care, cooking, chores, and paid work). To allow for comparison of parents' and adolescents' responses to similar questions, several items appear in both the adolescent and parent data. These items include the frequency with which parents and adolescents discuss school events, college and career plans, participation in religious and other activities, gender role attitudes and the division of household tasks within the family, and items measuring depression, stress, and anxiety.

Qualitative Data -- Interviews The main purpose of the interviews was to explore topics addressed in the parent and adolescent surveys in greater detail. Parent interviews were designed to examine how working parents cope with the demands of work and family life. Adolescent interviews touched on similar themes but altered questions to gauge the adolescent's perceptions of their parents work and family lives. Kindergartner interviews were brief and focused on children's after-school and child care arrangements and time spent with parents.

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Adolescent Health and Development in Context (AHDC) Study, Franklin County, Ohio, Wave 1, 2014-2016 (ICPSR 39045)

Released/updated on: 2024-07-23
Geographic coverage: United States, Columbus (Ohio), Ohio
Time period: 2014-01-01--2016-01-01
The overarching objective of the Adolescent Health and Development in Context (AHDC) Project is to collect multilevel, multi-contextual data on a large sample of 1,405 youth ages 11 to 17 years in Franklin County, Ohio. The study emphasizes the interplay of social, psychological, and biological processes in shaping youth developmental outcomes such as risk behavior and victimization, mental and physical health, and educational outcomes. The study employs a prospective cohort design in which the data on youth and caregivers were collected at two time-points, approximately one year apart. The Wave 1 field period began in spring 2014 and was completed in summer 2016. Wave 2 was conducted between January and December 2016. Within each wave, participant data were collected over a weeklong period. An Entrance Survey with both a focal youth and his or her caregiver was followed by a seven-day smartphone-based Global Positioning System (GPS) tracking and EMA data collection period (EMA Week), and a final Exit Survey at the end of the week.
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Americans' Changing Lives: Waves I, II, III, IV, V, and VI, 1986, 1989, 1994, 2002, 2011, and 2021 (ICPSR 4690)

Released/updated on: 2024-12-12
Geographic coverage: United States
Time period: 1986-01-01--2021-01-01

The Americans' Changing Lives (ACL) survey series is an ongoing, nationally representative, longitudinal study focusing especially on differences between Black and White Americans in middle and late life. These data constitute the first, second, third, fourth, fifth, and sixth waves in a panel survey covering a wide range of sociological, psychological, mental, and physical health items. Wave I of the study began in 1986 with a nation face-to-face survey of 3,617 adults ages 25 and up, with Black Americans and people aged 60 and over over-sampled at twice the rate of the others. Wave II constitutes face-to-face re-interviews in 1989 of those still alive. Survivors have been re-interviewed by telephone, and when necessary face-to-face, in 1994 (Wave III), 2001/02 (Wave IV), 2011 (Wave V), and 2019/21 (Wave VI).

Please note that for Wave VI, the majority of data collection occurred in 2019, with only a small subset (n=39) of participants surveyed in 2021.

ACL was designed and sought to investigate the following: (1) The ways in which a wide range of activities and social relationships that people engage in are broadly "productive," (2) how individuals adapt to acute life events and chronic stresses that threaten the maintenance of health, effective functioning, and productive activity, and (3) sociocultural variations in the nature, meaning, determinants, and consequences of productive activity and relationships. Among the topics covered are interpersonal relationships (spouse/partner, children, parents, friends), sources and levels of satisfaction, social interactions and leisure activities, traumatic life events (physical assault, serious illness, divorce, death of a loved one, financial or legal problems), perceptions of retirement, health behaviors (smoking, alcohol consumption, overweight, rest), and utilization of health care services (doctor visits, hospitalization, nursing home institutionalization, bed days). Also included are measures of physical health, psychological well-being, and indices referring to cognitive functioning.

Demographic information provided for individuals includes household composition, number of children and grandchildren, employment status, occupation and work history, income, family financial situation, religious beliefs and practices, ethnicity, race, education, sex, and region of residence.

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Baby's First Years (BFY), New York City, New Orleans, Omaha, and Twin Cities, 2018-2023 (ICPSR 37871)

Released/updated on: 2025-01-30
Geographic coverage: New York City, Omaha, Minneapolis, United States, St. Paul, Louisiana, New Orleans, Minnesota, New York (state), Nebraska
Time period: 2018-05-01--2019-06-30, 2019-07-01--2020-06-30, 2020-07-01--2021-06-30, 2021-07-01--2022-06-30, 2022-07-01--2023-08-16

The overall goal of the Baby's First Years study is to assess the causal role played by household income in affecting children's early cognitive, socio-emotional, and brain development. Recent advances in developmental neuroscience suggest that experiences early in life have profound and enduring impacts on the developing brain. Family economic resources shape the nature of many of these experiences, yet the extent to which they affect children's development is unknown. The Baby's First Years project is the first randomized controlled trial to provide estimates of the causal impacts of unconditional cash gifts on the cognitive, socio-emotional, and brain development of infants and young children in low-income U.S. families.

Specifically, 1,000 recruited mothers of infants with incomes below the federal poverty line from four diverse U.S. communities are receiving monthly cash gift payments by debit card. Mothers were initially told the gifts would last for the first 40 months of their child's life, but we have secured funding to continue the payments for three additional years (i.e., for a total of 76 months). Parents in the high cash gift group (n=400 in the study sample) are receiving a cash gift of $333 per month ($4,000 per year), while parents in the low cash gift group (n=600) are receiving a nominal monthly gift payment of $20 ($240 per year), also for 76 months.

In order to measure the impacts of the unconditional cash gift income on children's cognitive and behavioral development, we are assessing high and low cash gift group differences at ages 4, 6, and 8 (and, for a subset of measures, we capture interim development at ages 1, 2, and 3) in measures of cognitive, language, memory, self-regulation, and socio-emotional development. In order to understand the processes by which child impacts emerge, we are measuring a host of family process measures summarized in our pre-registration chart. Our data collection points are referred to as: "baseline", "age 1", "age 2," "age 3", "age 4", "age 6", and "age 8".

Additional information on the project, survey design, sample, variables, and COVID-19 pandemic adjustments are available from:

  • The User Guides for Baseline, Age 1, Age 2, Age 3, and Age 4, which are included under the "Data and Documentation" tab
  • The project's website: babysfirstyears.com

The researchers request that all peer-reviewed papers using BFY Data:

  • be submitted to PubMed https://publicaccess.nih.gov immediately upon acceptance for publication
  • include the following citation to the data in their bibliography:

Citation

Magnuson, Katherine A., Kimberly Noble, Greg J. Duncan, Nathan A. Fox, Lisa A. Gennetian, Hirokazu Yoshikawa, and Sarah Halpern-Meekin. Baby's First Years (BFY), New York City, New Orleans, Omaha, and Twin Cities, 2018-2023. ICPSR37871-v8. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], YYYY-MM-DD. http://doi.org/10.3886/ICPSR37871.v8

  • and include the following in their acknowledgements:

Acknowledgement

This research uses data from the Baby's First Years study. Research reported in this publication was supported by the Eunice Kennedy Shriver National Institute of Child Health and Human Development of the National Institutes of Health under Award Number R01HD087384 and 2R01HD087384. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. This research was additionally supported by the US Department of Health and Human Services, Administration for Children and Families, Office of Planning, Research and Evaluation; Office of Behavioral and Social Sciences Research-Office of the Director, National Institutes of Health; Andrew and Julie Klingenstein Family Fund; Annie E. Casey Foundation; Arnold Ventures; Arrow Impact; BCBS of Louisiana Foundation; Bezos Family Foundation, Bill and Melinda Gates Foundation; Bill Hammack and Janice Parmelee, Brady Education Fund; Chan Zuckerberg Initiative (Silicon Valley Community Foundation); Charles and Lynn Schusterman Family Philanthropies; Child Welfare Fund; Esther A. and Joseph Klingenstein Fund; Ford Foundation; Greater New Orleans Foundation; Heising-Simons Foundation; Holland Foundation; Jacobs Foundation; JPB Foundation; J-PAL North America; Lozier Foundation; New York City Mayor's Office for Economic Opportunity; Perigee Fund; Robin Hood Foundation; Robert Wood Johnson Foundation; Russell Sage Foundation; Sherwood Foundation; Valhalla Foundation; Weitz Family Foundation; W.K. Kellogg Foundation; and three anonymous donors.

Principal Investigators

Katherine Magnuson, PhD; University of Wisconsin-Madison, lead PI social and behavioral science

Kimberly Noble, MD, PhD; Teachers College, Columbia University, lead PI neuroscience

In alphabetical order:

Greg Duncan, PhD; University of California, Irvine

Nathan A. Fox, PhD; University of Maryland

Lisa A. Gennetian, PhD; Duke University Sanford School of Public Policy

Hirokazu Yoshikawa, PhD; New York University

Principal Investigators of Qualitative Substudy

Sarah Halpern-Meekin, PhD; University of Wisconsin-Madison

Katherine Magnuson, PhD; University of Wisconsin-Madison

Study Management

Lauren Meyer, Teachers College, Columbia University; National Project Director

Andrea Karsh, University of California, Irvine; Administrative Director

Matthew Maury, Duke University, Production and Retention Management

Study Co-Investigators

Sarah Black, PhD; University of New Orleans

William Fifer, PhD; Sackler Institute for Developmental Psychobiology, Columbia University Medical Center

Michael Georgieff, MD; University of Minnesota

Joseph Isler, PhD; Columbia University Medical Center

Debra Karhson, PhD; University of New Orleans

Alicia Kunin-Batson, PhD, University of Minnesota

Connie Lamm, PhD; University of Arkansas

Dennis Molfese, PhD; University of Nebraska, Lincoln

Victoria Molfese, PhD; University of Nebraska, Lincoln

Jennifer Mize Nelson, PhD; University of Nebraska, Lincoln

Timothy Nelson, PhD; University of Nebraska, Lincoln

Sonya Troller-Renfree, PhD; Teachers College, Columbia University

Study Data Collectors

The Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor, is responsible for recruitment and baseline, age-1, age-2, and age-3 data collection waves. Starting at age-4 through age-8, SRC is responsible for tracking families and assisting site-based staff in locating families. SRC data collection operations are overseen by: Stephanie Chardoul, Director of Survey Research Operations and Piotr Dworak, Senior Survey Specialist, Survey Research Operations.

Contact

To contact the study investigators, email them at [email protected]

Website: babysfirstyears.com

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Combined Generations Wave 1 and TransPop surveys, United States, 2016-2018 (ICPSR 38421)

Released/updated on: 2024-08-29
Geographic coverage: United States
Time period: 2016-01-01--2018-01-01

This collection includes a combined dataset of the Generations study wave 1 (baseline) survey and the TransPop study transgender survey. The two studies have many overlapping variables, and they examined topics such as respondents' health outcomes and behaviors, experiences with discrimination, identity, and transition-related experiences. Data from these studies were merged to allow for analysis of the combined LGBT populations. This dataset has also been reweighted to be representative of these populations.

The complete Generations study data (baseline, wave 2, and wave 3 survey data) can be found under study number 37166, and the complete TransPop study data (transgender and cisgender survey data) can be found under study number 37938. For detailed information on the Generations and TransPop studies, including related publications, please refer to their respective DSDR/ICPSR study pages.

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Consequences of Recent Parental Divorce for Young Adults, 1990-1992 (ICPSR 24400)

Released/updated on: 2010-03-12
Geographic coverage: United States, Maryland
Time period: 1990-01-01--1992-01-01
This longitudinal study focused on examining the consequences of recent parental divorce for young adults (initially ages 18-23) whose parents had divorced within 15 months of the study's first wave (1990-91). The sample consisted of 257 White respondents with newly divorced parents and 228 White respondents who comprised an intact-family comparison group. A life course framework guided the study that focused heavily on young adult transition behaviors (entries and exits from home, work, school, cohabitation and marriage relationships, parenthood), family relationships (relationships with mother and father, siblings, grandparents), and well-being and adjustment (depression, coping). For respondents in the divorced-parents group, additional questions were asked about specific aspects of the divorce and their involvement in it. A follow-up telephone interview conducted two years later assessed life changes and subsequent adjustment over time for both groups of respondents. Specific questions addressed the sexual history of respondents and their most recent sexual partner, including the perceived risk of HIV/AIDS, history of sexual transmitted disease, the use of contraception, how much information they had shared with each other regarding their sexual attitudes and behaviors, and respondent's knowledge of the AIDS virus. Information was also collected on marital/cohabitation history, employment history, reproductive history, including the number and outcome of all pregnancies, physical and mental health, and tobacco, alcohol and drug use. Demographic variables include respondent's sex, age, occupation, employment status, marital/cohabitation status, number of children, current enrollment in school, past and present religious preferences, frequency of religious attendance, military service, and the number, sex, and age of siblings. Demographic information also includes the age, education level, employment status, and annual income of the respondent's parents, as well as the age, race, and education level of the respondent's most recent sexual partner. For those respondents whose parents were recently divorced, demographic information was collected on each parent's current marital status and the age of their new spouse or partner.
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Epidemiology of Depression and Help-Seeking Behavior, 1979-1983, Los Angeles, California (ICPSR 24761)

Released/updated on: 2010-03-15
Geographic coverage: Los Angeles, California
Time period: 1979-01-01--1983-01-01
This project examined the epidemiological distribution of depression in a large metropolitan area. It employed structural equation models to examine the role of stress and social support systems in the occurrence of the condition. Other analysis focused on the antecedents of help-seeking. Using a multistage cluster sample, a probability sample of 1,003 adults (aged 18 and older), a representative sample of the Los Angeles County population, was interviewed in 1979. Three follow-up interviews were conducted over the next year, with an additional fifth interview in 1983. The study has been divided into five parts identified as: Time1, Time2, Time3, Time4, and Time5. Time1 focuses on demographic information, such as marital status, employment status, education, family relationships, household information, sex, and ethnicity. The other main focus of Time1 was on respondents' general health condition and their health insurance. Time2, Time3, Time4, and Time5 focus on diagnostic aspects of depression, social support, the role of stress, in addition to asking respondents questions regarding their behavior and mood, environmental and employment changes, and major life events.
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Generations: A Study of the Life and Health of LGB People in a Changing Society, United States, 2016-2019 (ICPSR 37166)

Released/updated on: 2023-01-05
Geographic coverage: United States
Time period: 2016-01-01--2017-01-01, 2017-01-01--2018-01-01, 2018-01-01--2019-01-01

The Generations study is a five-year study designed to examine health and well-being across three generations of lesbians, gay men, and bisexuals (LGB). The study explored identity, stress, health outcomes, and health care and services utilization among LGBs in three generations of adults who came of age during different historical contexts. This collection includes baseline, wave 1, and wave 2 data collected as part of the Generations study.

The study aimed to assess whether younger cohorts of LGBs differed from older cohorts in how they viewed their LGB identity and experienced stress related to prejudice and everyday forms of discrimination, as well as whether patterns of resilience differed between different LGB cohorts. Additionally, the study sought to examine how differences in stress experience affected mental health and well-being, including depressive and anxiety symptoms, substance and alcohol use, suicide ideation and behavior, and how younger LGBs utilized LGB-oriented social and health services, relative to older cohorts.

In wave 2, respondents were re-interviewed approximately one year after completion of the baseline (wave 1) survey. Only respondents who participated in the original sample of participants were surveyed at wave 2 (i.e., the enhancement oversample was not included in the longitudinal design of this study).

In wave 3, respondents were re-interviewed approximately one year after the completion of the wave 2 survey.

Demographic variables collected as part of this study include questions related to age, education, race, ethnicity, sexual identity, gender identity, income, employment, and religiosity.

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The Impact of Environmental and Physiological Factors on Sexual Assault and HIV (ICPSR 35889)

Released/updated on: 2015-05-14
Geographic coverage: Baltimore, United States, Maryland
This project recruits 400 HIV-negative African American women at increased risk for HIV from low-income health clinics in inner-city Baltimore, MD into a retrospective cohort study. By study design, at least one-third of the sample has experienced forced sex since the age of 18 and two-thirds have not experienced any abuse. In Phase I, participants complete a quantitative survey and biological data collection to measure salivary cortisol levels. In Phase II, a subset of women with a history of forced sex in adulthood (N=20) participate in qualitative in-depth interviews.
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Iowa Youth and Families Project, 1989-1992 (ICPSR 26721)

Released/updated on: 2011-11-03
Geographic coverage: Iowa, United States
Time period: 1989-01-01--1992-01-01

This data collection contains the first four waves of the Iowa Youth and Families Project (IYFP), conducted in 1989, 1990, 1991, and 1992. The Iowa Youth and Families Project was developed from an initial sample of 451 7th graders from two-parent families in rural Iowa. The study was merged with the Iowa Single Parent Project (ISPP) to form the Iowa Family Transitions Project in 1994, when the target youth were seniors in high school. Survey data were collected from the target child (7th grader), a sibling within four years of age of the target child, and both parents. Field interviewers visited families at their homes on several occasions to administer questionnaires and videotape interaction tasks including family discussion tasks, family problem-solving tasks, sibling interaction tasks, and marital interaction tasks.

The Household Data files contain information about the family's financial situation, involvement in farming, and demographic information about household members.

The Parent and the Child Survey Data files contain responses to survey questions about the quality and stability of family relationships, emotional, physical, and behavioral problems of individual family members, parent-child conflict, family problem-solving skills, social and financial support from outside the home, traumatic life experiences, alcohol, drug, and tobacco use, and opinions on topics such as abortion, parenting, and gender roles. In addition, the Child Survey Data files include responses collected from the target child and his or her sibling in the study about experiences with puberty, dating, sexual activity, and risk-taking behavior.

The Problem-Solving Data files contain survey data collected from respondents about the family interactions tasks.

The Observational Data files contain the interviewers' observations collected during these tasks.

Demographic variables include sex, age, employment status, occupation, income, home ownership, religious preference, frequency of religious attendance, as well as the ages and sex of all household members and their relationship to the head of household. Demographic information collected on the parents also includes their birth order within their family, the ages and political philosophy of their parents, the sex, age, education level, and occupation of their siblings, and the country of origin of their ancestors.

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Married and Cohabiting Couples, 2010 [United States] (ICPSR 31322)

Released/updated on: 2011-08-18
Geographic coverage: United States

The Married and Cohabiting Couples, 2010 NCFMR Pilot Data is a nationally representative sample of U.S. married and cohabiting adults aged 18-64. Data are available for 1,504 married individuals representing 752 married couples and 646 cohabiting individuals representing 323 couples. Basic demographic characteristics are available related to age, income, educational attainment, gender, and race, and individual- and couple-level data. Knowledge Networks conducted a study on married and cohabiting couples' relationships with heterosexual couples 18-64 years of age. The data collection took place from July 26, 2010, to October 13, 2010. The main data collection was preceded by a small pretest to verify the data collection accuracy. The NCFMR Married and Cohabiting Couples pilot data offers rich data concerning relationship dynamics, both at the individual- and couple-levels including measures of relationship quality for both married and cohabiting individuals; measures of relationship stability, formation, and dissolution for married and cohabiting individuals; measures of role strain and conflict between work and family ties; measures concerning health decisions, power of attorney, and expected plan of care in later life; and detailed information on social support concerning each of these measures.

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Midlife in the United States (MIDUS 1) National Study of Daily Experiences (NSDE), 1996-1997 (ICPSR 3725)

Released/updated on: 2023-01-25
Geographic coverage: United States
Time period: 1996-03-01--1997-03-01
The National Study of Daily Experiences (NSDE) is one of the in-depth studies that are part of the MacAuthur Foundation National Survey of Midlife in the United States (MIDUS). The purpose of the NSDE is to examine the day-to-day lives, particularly the daily stressful experiences, of a subsample of MIDUS respondents. Although previous daily diary research has advanced understanding of daily stress processes, there are important limitations in these studies that are addressed in the NSDE. First, previous studies in this area have relied on small and often unrepresentative samples that limit the ability to generalize findings. For this reason, the NSDE uses a large national sample of adults in the United States. Second, previous studies of individual differences in exposure and reactivity to daily events have typically examined only one source of variability, such as personality, to the exclusion of others. The NSDE corrects this problem by utilizing the data collected in the larger MIDUS survey on a wide array of sociodemographic and psychosocial variables to study the determinants of exposure and reactivity to daily stress. Third, previous studies have failed to investigate the role of genetics in both exposure and reactivity to daily stressors. The NSDE has a subsample of identical and fraternal same-sex twin pairs in order to explore this issue. The twins were selected if twin pairs had high self-reported certainty of zygosity, had completed the MIDUS interview and questionnaires, and had mailed in their cheek cell samples. A wide range of information was obtained using the daily telephone interview. Conducting interviews for an entire year provided information about seasonal variation in daily experiences. Respondents completed an average of 7.2 of the 8 interviews resulting in a total of 10,397 days of interviews. Data collection consisted of 40 separate "flights" of interviews with each flight representing the eight-day sequence of interviews from approximately 33 respondents. The entire interview was CATI programmed, which enabled researchers to incorporate skip patterns and open ended probe questions as well as to keypunch data during the interview, allowing data cleaning throughout the data collection. Demographic information includes gender and age.
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Midlife in the United States (MIDUS 2): Daily Stress Project, 2004-2009 (ICPSR 26841)

Released/updated on: 2017-11-20
Geographic coverage: United States
Time period: 2004-01-01--2009-01-01
The Daily Stress Project of MIDUS II contains data from 2,022 respondents. These respondents include three distinct groups, all of whom completed the Project 1 Survey: (1) longitudinal (n = 794), (2) expanded (n = 1,048), and (3) Milwaukee (n = 180). The longitudinal group included individuals who participated in the Daily Stress Project at Time 1, the expanded group consisted of Time 2 participants from all MIDUS subsamples (RDD, twins, siblings) who did not participate in the Daily Stress Project at Time 1, and the Milwaukee group contained individuals who participated in the baseline MIDUS Milwaukee study, initiated in 2005. The purpose of the Daily Stress Project was to examine how sociodemographic factors, health status, personality characteristics, and genetic endowment modify patterns of change in exposure to day-to-day life stressors as well as physical and emotional reactivity to these stressors. The primary aims were to: (1) describe how the links between multiple aspects of daily stressors (e.g., frequency, content, severity) and daily physical and emotional well-being change over ten years during adulthood; (2) examine how sociodemographic factors and personality characteristics influence change in both exposure to as well as changes in physical and emotional reactivity to daily stressors; (3) investigate how exposure and reactivity to daily stressors correlate with physiological indicators of physical health and predict changes in global health reports; and (4) explore the relative genetic and environmental influences mediating change in exposure and physical and emotional reactivity to daily stressors throughout adulthood. Respondents in the NSDE are a representative subsample of the MIDUS (Midlife in the United States) survey. The Daily Stress study is Project 2 of the MIDUS longitudinal study, a national survey of more than 7,000 Americans (aged 25 to 74) began in 1994. The purpose of the larger study was to investigate the role of behavioral, psychological, and social factors in understanding age-related differences in physical and mental health. With support from the National Institute on Aging, a longitudinal follow-up of the original MIDUS samples [core sample (N = 3,487), metropolitan over-samples (N = 757), twins (N = 957 pairs), and siblings (N = 950)] was conducted in 2004-2006. Guiding hypotheses, at the most general level, were that behavioral and psychosocial factors are consequential for health (physical and mental). A description of the study and findings from it are available on the MIDUS Web site.
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National Survey of Children's Health, 2003 (ICPSR 4691)

Released/updated on: 2007-05-24
Geographic coverage: United States

The National Survey of Children's Health, funded by the Maternal and Child Health Bureau (MCHB), is a module of the State and Local Area Integrated Telephone Survey (SLAITS) that is conducted by the National Center for Health Statistics (NCHS) at the Centers for Disease Control and Prevention (CDC).

The survey was conducted to assess how well each state, and the nation as a whole, met MCHB's strategic plan goals and national performance measures. These goals include providing national leadership for maternal and child health, promoting an environment that supports maternal and child health, eliminating health barriers and disparities, improving the health infrastructure and systems of care, assuring quality care, working with states and communities to plan and implement policies and programs to improve the social, emotional, and physical environment, and acquiring the best available evidence to develop and promote guidelines and practices to assure a social, emotional, and physical environment that supports the health and well-being of women and children.

The National Survey of Children's Health (NSCH) was designed to produce national- and state-specific prevalence estimates for a variety of physical, emotional, and behavioral health indicators and measures of children's experiences with the health care system. Respondents were asked an extensive battery of questions about the family, including parental health, stress and coping behaviors, family activities, and parental concerns about their children, as well as their perceptions of the child's neighborhood.

Demographic information includes race, gender, family income, and education level.

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New Hope Project: Income and Employment Effects on Children and Families, 1994-2003 [Restricted Use] (ICPSR 30282)

Released/updated on: 2013-04-03
Geographic coverage: Milwaukee, United States, Wisconsin
Time period: 1994-08-01--2003-01-01
The New Hope Project gathered information on respondents over eight years using several data sources. This collection consists of three datasets: (1) Adults, (2) Child and Family Study (CFS) Parents, and (3) Youth. Information was collected on respondent's employment history, job characteristics and security, other sources of income, feelings about respondent's financial situation, material hardship, respondent's access to health care, as well as experiences with the New Hope program. Furthermore, families with at least one child between the ages of 1 and 10 at initial random assignment were selected for the Child and Family Study (CFS). The CFS independently surveyed parents/primary caregivers and up to two focal children when applicable, and collected information about the parents' and the child's well-being. Additionally, teachers of school-aged children were mailed surveys and asked to rate the child's performance and behavior. Demographic variables include age, gender, race, nationality, citizenship, educational attainment, employment status, income, marital status, parent-child relations, and household composition.
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Project on Human Development in Chicago Neighborhoods (PHDCN): Young Adult Self Report, Wave 1, 1994-1995 (ICPSR 13606)

Released/updated on: 2006-03-01
Geographic coverage: United States, Chicago, Illinois
Time period: 1994-01-01--1997-01-01
The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One of the measures that composed the Longitudinal Cohort Study was the Young Adult Self Report (YASR). The YASR protocol, a self-administered survey, was first developed by Thomas M. Achenbach and has been a widely used measure for evaluating subjects between the ages of 18 and 30 with respect to their functioning in social relationships, level of mental, emotional and physical health, substance use and abuse, as well as tendencies toward anti-social and criminal behavior. The PHDCN version of the Young Adult Self Report provided a thorough self assessment of the respondents belonging to Cohort 18 of the Longitudinal Cohort Study and scored each respondent based on his or her level of psychological and behavioral functioning.
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Project on Human Development in Chicago Neighborhoods (PHDCN): Young Adult Self Report, Wave 2, 1997-2000 (ICPSR 13666)

Released/updated on: 2006-01-16
Geographic coverage: United States, Chicago, Illinois
Time period: 1997-01-01--2000-01-01
The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One of the measures that composed the Longitudinal Cohort Study was the Young Adult Self Report (YASR). The YASR protocol, a self-administered survey, was first developed by Thomas M. Achenbach. It has been a widely used measure for evaluating subjects between the ages of 18 and 30 with respect to their functioning in social relationships, level of mental, emotional and physical health, substance use and abuse, and their tendencies toward antisocial and criminal behavior. The Wave 2 PHDCN version of the Young Adult Self Report, including an officially revised version of behavior problem items, offered a thorough self-assessment of the respondents belonging to Cohort 18 of the Longitudinal Cohort Study, scoring each respondent based on his or her level of psychological and behavioral functioning.
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Project on Human Development in Chicago Neighborhoods (PHDCN): Young Adult Self Report, Wave 3, 2000-2002 (ICPSR 13751)

Released/updated on: 2006-10-12
Geographic coverage: United States, Chicago, Illinois
Time period: 2000-01-01--2002-01-01
The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One of the measures that composed the Longitudinal Cohort Study was the Young Adult Self Report (YASR). The YASR protocol was first developed by Thomas M. Achenbach. It has been a widely used measure for evaluating subjects between the ages of 18 and 30 with respect to their functioning in social relationships, level of mental, emotional and physical health, substance use and abuse, and their tendencies toward antisocial and criminal behavior. The Wave 3 PHDCN version of the Young Adult Self Report offered a thorough self-assessment of the respondents belonging to Cohorts 15 and 18 of the Longitudinal Cohort Study. The Wave 3 instrument featured a reduced version than was used in Wave 2 (PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): YOUNG ADULT SELF REPORT, WAVE 2, 1997-2000 [ICPSR 13666]).
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Resources for Enhancing Alzheimer's Caregiver Health, 1996-2001 (ICPSR 3253)

Released/updated on: 2006-03-30
Geographic coverage: United States, Tennessee, California, Alabama, Florida, Birmingham, Pennsylvania, Miami, Palo Alto, Massachusetts, Memphis, Philadelphia, Boston
Time period: 1996-09-01--2001-02-01
Resources for Enhancing Alzheimer's Caregiver Health (REACH) was established in 1995 to conduct social and behavioral research on interventions designed to enhance family caregiving, particularly in minority families, for persons with Alzheimer's Disease and related disorders. Data were collected through randomized clinical trials at six sites: University of Alabama--Birmingham, the Research and Training Institute of the Hebrew Rehabilitation Center for Aged in Boston, University of Tennessee--Memphis, University of Miami, Veterans Affairs Palo Alto Health Care System and Stanford University, and Thomas Jefferson University in Philadelphia. Interventions studied included psychoeducational support groups, behavioral skills training programs, family-based systems interventions, environmental modifications, and technological computer-based information and communication services. Although interventions varied by site, all sites collected the same data at the same time intervals. The impact of the various intervention strategies on psychological distress, health status, health practices, and health care utilization was assessed. Parts 1 through 5 contain screening data and a short mental status questionnaire. Parts 6 through 24 contain baseline data and cover activities of daily living, anxiety, and caregiver health and behaviors along with sociodemographic information. Also included are care recipient medications and sociodemographic information. Parts 25 and 26 contain tracking data and also include an examination of interventions.
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Resources for Enhancing Alzheimer's Caregiver Health, 1996-2001, Baseline and Follow-Up Data (ICPSR 3678)

Released/updated on: 2006-09-26
Geographic coverage: United States, Tennessee, California, Alabama, Florida, Birmingham, Pennsylvania, Miami, Palo Alto, Massachusetts, Memphis, Philadelphia, Boston
Time period: 1996-09-01--2001-02-01
Resources for Enhancing Alzheimer's Caregiver Health (REACH) was established in 1995 to conduct social and behavioral research on interventions designed to enhance family caregiving, particularly in minority families, for persons with Alzheimer's Disease and related disorders. Baseline data (ICPSR 3253) were collected through randomized clinical trials at six sites: University of Alabama-Birmingham, The Research and Training Institute of the Hebrew Rehabilitation Center for Aged in Boston, University of Tennessee-Memphis, University of Miami, Veterans Affairs Palo Alto Health Care System and Stanford University, and Thomas Jefferson University in Philadelphia. Interventions such as psychoeducational support groups, behavioral skills training programs, family-based systems interventions, environmental modifications, and technological computer-based information and communication services varied by site. This collection contains baseline data along with follow-up data at 6-, 12-, and 18-month intervals from each site with focus on the impact of the various intervention strategies on psychological distress, health status, health practices, and health care utilization. Also included are follow-up batteries, transition batteries (placement, bereavement, discontinued), and data reporting missed visits. Parts 1 through 5 contain screening data and responses to a short mental status questionnaire. Parts 6 through 34 contain baseline data along with follow-up data at 6, 12, and 18-month intervals and cover activities of daily living, anxiety, and caregiver health and health behaviors along with sociodemographic information. Also included are care recipient medications and sociodemographic information. Parts 35 through 40 contain tracking data and also include an examination of interventions.
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Social Environment and Biomarkers of Aging Study (SEBAS) in Taiwan, 2000 and 2006 (ICPSR 3792)

Released/updated on: 2014-06-17
Geographic coverage: Taiwan

The Social Environment and Biomarkers of Aging Study (SEBAS) in Taiwan, 2000 and 2006, provides information regarding the health and well-being of older persons in Taiwan. Taiwan has undergone rapid demographic, social, and economic changes, becoming a highly urbanized and industrial society with a growing population of persons age 65 or older. SEBAS explores the relationship between life challenges and mental and physical health, the impact of social environment on the health and well-being of the elderly, as well as biological markers of health and stress. The study collected self-reports of physical, psychological, and social well-being, plus extensive clinical data based on medical examinations and laboratory analyses. Examination of health outcomes included chronic illnesses, functional status, psychological well-being, and cognitive function. Questions regarding life challenges focused on perceived stress, economic difficulties, security and safety, and the consequences of a major earthquake. Biological markers were used to identify cardiovascular risk factors, metabolic process measures, immune-system activity, the hypothalamic-pituitary adrenal axis, and sympathetic nervous system activity. Two rounds of biomarker data collected in 2000 and 2006 were complemented by face-to-face interviews with the participants. Demographic and background variables included age, sex, education, ethnicity, occupation, and residency.

Additional information about the Social Environment and Biomarkers of Aging Study can be found at the Georgetown University Center for Populations and Health Web site.

A Webinar describing the Social Environment and Biomarkers of Aging Study (SEBAS) was presented June 20, 2016. All interested users can access the webinar here.

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Study of Women's Health Across the Nation (SWAN), 1998-2001: Family Medical History From Visits 02, 03, and 04 (ICPSR 30181)

Released/updated on: 2014-02-13
Geographic coverage: Inkster, Hackensack, United States, Chicago, Ypsilanti, California, New Jersey, Michigan, Pennsylvania, Illinois, Massachusetts, Los Angeles, Boston, Pittsburgh
Time period: 1998-02-15--2001-06-01
The Study of Women's Health Across the Nation (SWAN) is a multisite longitudinal, epidemiologic study designed to examine the health of women during their middle years. The study examines the physical, biological, psychological and social changes during this transitional period. The goal of SWAN's research is to help scientists, health care providers, and women learn how mid-life experiences affect health and quality of life during aging. The study is co-sponsored by the National Institute on Aging (NIA) and the National Institute of Health (NIH), Office of Research on Women's Health. The study began in 1994. Between 1998 and 2001, 2,829 of the 3,302 women that joined SWAN participated in a collection of family history data. The research centers are located in the following communities: Ypsilanti and Inkster, MI (University of Michigan); Boston, MA (Massachusetts General Hospital); Chicago, IL (Rush Presbyterian-St. Luke's Medical Center); Almeda and Contra Costa County, CA (University of California, Davis and Kaiser Permanente); Los Angeles, CA (University of California, Los Angeles); Hackensack, NJ (Hackensack University Medical Center); and Pittsburgh, PA (University of Pittsburgh). SWAN participants represent five racial/ethnic groups and a variety of backgrounds and cultures.
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Study of Women's Health Across the Nation (SWAN), 2003-2005: Visit 07 Dataset (ICPSR 31901)

Released/updated on: 2025-07-10
Geographic coverage: Inkster, Contra Costa County, Alameda County, United States, Chicago, Ypsilanti, California, Michigan, Pennsylvania, Illinois, Massachusetts, Los Angeles, Boston, Pittsburgh
Time period: 2003-05-15--2005-01-31
The Study of Women's Health Across the Nation (SWAN), is a multi-site longitudinal, epidemiologic study designed to examine the health of women during their middle years. The study examines the physical, biological, psychological and social changes during this transitional period. The goal of SWAN's research is to help scientists, health care providers and women learn how mid-life experiences affect health and quality of life during aging. Data were collected about doctor visits, medical conditions, medications, treatments, medical procedures, relationships, smoking, and menopause related information such as age at pre-, peri- and post-menopause, self-attitudes, feelings, and common physical problems associated with menopause. The study began in 1994. Between 2003 and 2005, 2,327 of the 3,302 women that joined SWAN were seen for their seventh follow-up visit. The research centers are located in the following communities: Ypsilanti and Inkster, MI (University of Michigan); Boston, MA (Massachusetts General Hospital); Chicago, IL (Rush Presbyterian-St. Luke's Medical Center); Alameda and Contra Costa County, CA (University of California-Davis and Kaiser Permanente); Los Angeles, CA (University of California-Los Angeles); Hackensack, NJ (Hackensack University Medical Center); and Pittsburgh, PA (University of Pittsburgh). SWAN participants represent five racial/ethnic groups and a variety of backgrounds and cultures. Though the New Jersey site was still part of the study, data was not collected from this site for the seventh visit. Demographic and background information includes age, language of interview, marital status, household composition, and employment.
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Study of Women's Health Across the Nation (SWAN): Visit 01 Dataset, [United States], 1997-1999 (ICPSR 29221)

Released/updated on: 2019-05-02
Geographic coverage: Detroit, United States, Chicago, California, Oakland, New Jersey, Michigan, Pennsylvania, Illinois, Massachusetts, Los Angeles, Newark, Boston, Pittsburgh
Time period: 1997-02-01--1999-01-31

The Study of Women's Health Across the Nation (SWAN) is a multi-site longitudinal, epidemiologic study designed to examine the health of women during their middle years. The study examines the physical, biological, psychological, and social changes during this transitional period. The goal of SWAN's research is to help scientists, health care providers and women learn how mid-life experiences affect health and quality of life during aging. The data include questions about doctor visits, medical conditions, medications, treatments, medical procedures, relationships, smoking, and menopause related information such as age at pre-, peri- and post-menopause, self-attitudes, feelings, and common physical problems associated with menopause.

The study is co-sponsored by the National Institute on Aging (NIA), the National Institute of Nursing Research (NINR), the National Institutes of Health (NIH), and the NIH Office of Research on Women's Health. The study began in 1994. Between 1997 and 1999, 2,881 of the 3,302 women that joined SWAN were seen for their first follow-up visit. The research centers are located in the following communities: Detroit, MI; Boston, MA; Chicago, IL; Oakland and Los Angeles, CA; Newark, NJ; and Pittsburgh, PA. SWAN participants represent five racial/ethnic groups and a variety of backgrounds and cultures.

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Study of Women's Health Across the Nation (SWAN): Visit 03 Dataset, [United States], 1999-2001 (ICPSR 29701)

Released/updated on: 2019-05-29
Geographic coverage: Detroit, United States, Chicago, California, Oakland, New Jersey, Michigan, Pennsylvania, Illinois, Massachusetts, Los Angeles, Newark, Boston, Pittsburgh
Time period: 1999-02-01--2001-01-31

The Study of Women's Health Across the Nation (SWAN), is a multi-site longitudinal, epidemiologic study designed to examine the health of women during their middle years. The study examines the physical, biological, psychological, and social changes during this transitional period. The goal of SWAN's research is to help scientists, health care providers, and women learn how mid-life experiences affect health and quality of life during aging. The data include questions about doctor visits, medical conditions, medications, treatments, medical procedures, relationships, smoking, and menopause related information.

The study is co-sponsored by the National Institute on Aging (NIA), the National Institute of Nursing Research (NINR), the National Institutes of Health (NIH), and the NIH Office of Research on Women's Health. The study began in 1994. Between 1999 and 2001, 2,710 of the 3,302 women that joined SWAN were seen for their third follow-up visit. The research centers are located in the following communities: Detroit, Michigan; Boston, Massachusetts; Chicago, Illinois; Oakland and Los Angeles, California; Newark, New Jersey; and Pittsburgh, Pennsylvania. SWAN participants represent five racial/ethnic groups and a variety of backgrounds and cultures.

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Texas Longitudinal Study of Adolescent Stress Resilience and Health, 2016-2019 (ICPSR 38180)

Released/updated on: 2022-01-20
Geographic coverage: United States, Texas
Time period: 2016-09-01--2019-05-01

Texas Longitudinal Study of Adolescent Stress Resilience and Health, 2016-2019 (TLSASR) is a multi-method study examining the effects of naturalistic stressors on adolescents as they enter and proceed through high school. This transitional period often presents adolescents with more and more complex sources of social and evaluative stress. Both stress levels and effectiveness of adolescents' responses can have consequences on their life course trajectories, including contributing to gender and racial/ethnic disparities in adult health and well-being. The TLSASR dataset aims to support researchers pursuing a deeper and more integrative understanding of this critical adolescent developmental period.

The study's data contain multiple waves of collection spanning the fall of 2016 to the spring of 2019. Informed by the biopsychosocial model of human development, the study integrates data from a range of sources and methods each wave/year. This included a survey battery assessing numerous psychological (e.g., stress, mental health, mindset), biological (e.g., height, weight, pubertal development), and contextual (e.g., school climate) factors, as well as daily in-school experience sampling, and daily salivary hormone levels for hormonal assessment. School records for each year are also included, as is an experimental manipulation testing the effects of a brief growth mindset intervention to promote improved stress resilience.

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Toledo Adolescent Relationships Study (TARS): Wave 7, RAPID: The Coronavirus Pandemic: Predictors and Consequences of Compliance with Social Distancing Recommendations, United States, 2020 (ICPSR 38815)

Released/updated on: 2026-05-05
Geographic coverage: United States, Ohio, Toledo
Time period: 2020-06-05--2020-11-06

This study builds on a 20-year longitudinal investigation of the lives and relationship experiences of a large, diverse sample of young adult women and men interviewed first as adolescents. It focuses on the phenomenon of social distancing.

The COVID-19 survey (online) module and in-depth (phone) interviews with subsamples of compliant and less than compliant respondents has three specific aims: a) identify life course experiences and social influences associated with variability in compliance with social distancing recommendations, b) examine relationship-based dynamics and other contingencies (e.g., economic) linked to compliance decision-making, and particularly factors associated with 'derailments' after initially intending to comply with these guidelines, and c) assess consequences of social distancing for emotional and behavioral health and relationship functioning (e.g., depression, substance use, intimate partner conflict).

The Toledo Adolescent Relationships Study (TARS) includes six prior waves of data that were collected in 2001, 2002, 2004, 2006, 2011, and 2018 through 2020. Please see the ICPSR Series page for available studies.

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TransPop, United States, 2016-2018 (ICPSR 37938)

Released/updated on: 2021-06-23
Geographic coverage: United States
Time period: 2016-01-01--2018-01-01

The TransPop study is the first national probability sample of transgender individuals in the United States (it also includes a comparative cisgender sample). A primary goal of this study was to provide researchers with a representative sample of transgender people in the United States. The study examines a variety of health-relevant domains including health outcomes and health behaviors, experiences with interpersonal and institutional discrimination, identity, transition-related experiences, and basic demographic characteristics (age, race/ethnicity, religion, political party affiliation, marital status, employment, income, location, sex, gender, and education).

Co-investigators (in alphabetical order): Walter O. Bockting, Ph.D. (Columbia University); Jody L. Herman, Ph.D. (UCLA); Sari L. Reisner, Ph.D. (Harvard University and The Fenway Institute, Fenway Health).

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Well Elderly 2, Los Angeles, California, 2004-2008 (ICPSR 33641)

Released/updated on: 2013-05-28
Geographic coverage: United States, Los Angeles, California
Time period: 2004-11-01--2008-10-01
Older people are at risk for health decline and loss of independence. Lifestyle interventions offer potential for reducing such negative outcomes. The Well Elderly study attempts to determine the effectiveness and cost-effectiveness of a preventive lifestyle-based occupational therapy intervention, administered in a variety of community-based sites, in improving mental and physical well-being and cognitive functioning in ethnically diverse older people. Participants included 460 men and women aged 60 - 95 years recruited from 21 sites in the greater Los Angeles metropolitan area. For six months elders in one group received the Well Elderly Intervention, while elders in the other group remained untreated for the first six months and received the intervention during the second six-month phase. Following receipt of the intervention, subjects in both groups remained untreated for respective twelve month spans. The manualized intervention consisted of small group and individual sessions led by a licensed occupational therapist. Typically, each group had six to eight members, all recruited from the same site and treated by the same intervener. Monthly community outings were scheduled to facilitate direct experience with intervention content such as the use of public transportation. An assessment battery (including questionnaires, cognitive tests, and biomarker samples) measured potential mediating variables as well as outcome variables and was administered at study baseline and at subsequent six-month intervals. In addition, at baseline a set of background and control variables were measured. At the end of each assessment session (questionnaires and cognitive tests), subjects provided salivary samples. The Samples were assayed for cortisol, dehydroepiandrosterone, and alpha amylase. Assessment of health-related quality of life, life satisfaction, and depression was based on self-rated questionnaires. Cognitive tests were conducted individually. Perceived physical health and aspects of mental well-being were measured, as were depressive symptoms, and life satisfaction. Variable categories include, health survey, stressful events, feelings, connections, attitudes, supports, beliefs, issues, activities, and demographics i.e. respondents age, sex, race, education level, employment, and income.