American Time Use Survey (ATUS), 2008 (ICPSR 26149)
Baby's First Years (BFY), New York City, New Orleans, Omaha, and Twin Cities, 2018-2023 (ICPSR 37871)
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
Chitwan Valley Family Study: Labour Outmigration, Agricultural Productivity and Food Security, Nepal, 2015-2017 (ICPSR 36755)
The Chitwan Valley [Nepal] Family Study: Labor Outmigration, Agricultural Productivity and Food Security is a three year project with the aim to investigate the consequences of labor outmigration on agricultural productivity in a poor agricultural country persistently facing food security problems. A Data Guide for this study is available as a web page and for download.
This project's data collection is made up of twenty-five datasets:
Datasets 1-6: The Household Agriculture and Migration Survey includes information on household agricultural practices and remittances received by the household. Face-to-face interviews were conducted to collect data from household members who previously participated in the Chitwan Valley Family Study (ICPSR 4538).
Topics of the survey include crop production and farm technology use, wealth, assets, income, consumption, food security and information about each household member currently away from home. The survey also collected information on gender, ethnicity, and age.
Datasets 7-16: Measured yields of major crops grown by farm households that previously participated in the Chitwan Valley Family Study (ICPSR 4538).
Dataset 17: A monthly demographic event registry administered to all households that previously participated in the Chitwan Valley Family Study (ICPSR 4538).
Datasets 18-23: The Women's Time Use Survey was designed and administered to married, Nepalese women to collect information on changes in their time and involvement in agriculture and other activities. Face-to-face interviews and telephone interviews were conducted to collect data from women who previously participated in the Chitwan Valley Family Study (ICPSR 4538).
The collection covered a range of topics including farm work, hygiene, finances, health, and religion. Further, respondents were queried concerning socialization and assisting children and the elderly.
Datasets 24-25: The Women's Time Use Survey was designed and administered to married, Nepalese women to collect information on changes in their time and involvement in agriculture and other activities. Face-to-face interviews and telephone interviews were conducted to collect data from women who previously participated in the Chitwan Valley Family Study (ICPSR 4538).
Consequences of Recent Parental Divorce for Young Adults, 1990-1992 (ICPSR 24400)
Early Childhood Longitudinal Study [United States]: Kindergarten Class of 1998-1999, Third Grade (ICPSR 4075)
English Longitudinal Study of Ageing (ELSA) (ICPSR 139)
The English Longitudinal Study of Ageing is a study of aging and quality of life for people over the age of 50. Established in 2002, the original sample was drawn from households that had previously responded to the Health Survey for England (HSE) between 1998 and 2001. The same group of respondents are surveyed every two years to see how their health, economic, and social circumstances may change over time. One of the study's aims is to determine the relationships between functioning and health, social networks, resources, and economic position as people plan for, move into, and progress beyond retirement. It is patterned after the Health and Retirement Study, a similar study based in the United States.
Although new topics can be introduced at different waves, every module has been reviewed to ensure that it will provide data that can measure change over time. This is achieved by repeating some measures exactly, by asking directly about change, and by adopting questions to allow people to update or amend past responses.
The information collected provides data about: Household and individual demographics; Health - physical and psychosocial; Social care (from Wave 6); Work and pensions; Income and assets; Housing; Cognitive function; Social participation; Effort and Reward (voluntary work and caring); Expectations; Walking speed; Weight.
Family Interaction, Social Capital, and Trends in Time Use (FISCT), 1998-1999: [United States] (ICPSR 3191)
Family Life and Sexual Learning, 1976 (ICPSR 7755)
First Malaysian Family Life Survey, 1976-1977 (ICPSR 6170)
India Human Development Survey (IHDS), 2005 (ICPSR 22626)
A Data Guide for this study is available as a web page and for download. The India Human Development Survey 2005 (IHDS) is a nationally representative, multi-topic survey of 41,554 households in 1,503 villages and 971 urban neighborhoods across India. Two one-hour interviews in each household covered topics concerning health, education, employment, economic status, marriage, fertility, gender relations, and social capital. Children aged 8-11 completed short reading, writing and arithmetic tests. Additional village, school, and medical facility interviews are also available.
Iowa Youth and Families Project, 1989-1992 (ICPSR 26721)
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.
The Irish Longitudinal Study on Ageing (TILDA), Wave 1, 2009-2011 (ICPSR 34315)
This catalog record includes detailed variable-level descriptions, enabling data discovery and comparison. The TILDA Series data files, including studies 34315, 38681, 37105, 37106, 38670, 38674, are no longer available from ICPSR and NACDA at the request of the data producer due to concerns related to EU and Irish data privacy and data sharing rules. Individuals interested in obtaining TILDA data access at this time should reach out to the TILDA project directly (https://tilda.tcd.ie/data/accessing-data/).
The Irish Longitudinal Study on Ageing (TILDA) is a major inter-institutional initiative led by Trinity College Dublin which aims to produce a massive improvement in the quantity and quality of data, research and information relating to older people and ageing in Ireland. Eligible respondents for this study include individuals aged 50 and over and their spouses or partners of any age. The study involves interviews on a two yearly basis with a sample cohort of 8,504 people aged 50 and over (or their spouses/partners) and resident in Ireland, collecting detailed information on all aspects of their lives, including the economic (pensions, employment, living standards), health (physical, mental, service needs and usage) and social aspects (contact with friends and kin, formal and informal care, social participation). Both survey interviews and physical and biological measurements are utilized. Demographic and background variables include age, sex, marital status, household composition, education, and employment.
The Irish Longitudinal Study on Ageing (TILDA), Wave 3, 2014-2015 (ICPSR 37106)
This catalog record includes detailed variable-level descriptions, enabling data discovery and comparison. The TILDA Series data, including studies 34315, 38681, 37105, 37106, 38670, 38674, are currently unavailable at the request of the data producer due to concerns related to EU and Irish data privacy and data sharing rules. We are working to determine the best solution to continue to share these data with the research community. Individuals interested in obtaining TILDA data access at this time should reach out to the TILDA project directly (https://tilda.tcd.ie/data/accessing-data/).
The Irish Longitudinal Study on Ageing (TILDA) is a major inter-institutional initiative led by Trinity College Dublin which aims to produce a massive improvement in the quantity and quality of data, research and information relating to older people and ageing in Ireland. Eligible respondents for this study include individuals aged 50 and over and their spouses or partners of any age. The study involves interviews on a two yearly basis with a sample cohort of 8,504 people aged 50 and over (or their spouses/partners) and resident in Ireland, collecting detailed information on all aspects of their lives, including the economic (pensions, employment, living standards), health (physical, mental, service needs and usage) and social aspects (contact with friends and kin, formal and informal care, social participation). Both survey interviews and physical and biological measurements are utilized.
The third wave of TILDA interviews were undertaken between March 2014 and October 2015. Of the 7,445 interviewed in Wave 2, a third interview was obtained for 6,874 respondents. These consisted of the self, proxy and end-of-life interviews types. In addition to the returning respondents, 28 interviews were obtained from eligible household members who had chosen not to take part in Wave 1 or the new spouses/partners of existing respondents.
Demographic and background variables include age, sex, marital status, household composition, education, and employment.
The Irish Longitudinal Study on Ageing (TILDA), Wave 4, 2016 (ICPSR 38670)
This catalog record includes detailed variable-level descriptions, enabling data discovery and comparison. The TILDA Series data, including studies 34315, 38681, 37105, 37106, 38670, 38674, are currently unavailable at the request of the data producer due to concerns related to EU and Irish data privacy and data sharing rules. We are working to determine the best solution to continue to share these data with the research community. Individuals interested in obtaining TILDA data access at this time should reach out to the TILDA project directly (https://tilda.tcd.ie/data/accessing-data/).
The Irish Longitudinal Study on Ageing (TILDA) is a major inter-institutional initiative led by Trinity College Dublin which aims to produce a massive improvement in the quantity and quality of data, research and information relating to older people and ageing in Ireland. Eligible respondents for this study include individuals aged 50 and over and their spouses or partners of any age. The study involves interviews on a one year basis with a sample cohort of residents of Ireland, collecting detailed information on all aspects of their lives, including the economic (pensions, employment, living standards), health (physical, mental, service needs and usage) and social aspects (contact with friends and kin, formal and informal care, social participation). Both survey interviews and physical and biological measurements are utilized.
The fourth wave of TILDA interviews were undertaken between January and December 2016. A total of 5,713 participants completed the self-interview.
Demographic and background variables include age, sex, marital status, household composition, education, and employment.
The Irish Longitudinal Study on Ageing (TILDA), Wave 5, 2018 (ICPSR 38674)
This catalog record includes detailed variable-level descriptions, enabling data discovery and comparison. The TILDA Series data, including studies 34315, 38681, 37105, 37106, 38670, 38674, are currently unavailable at the request of the data producer due to concerns related to EU and Irish data privacy and data sharing rules. We are working to determine the best solution to continue to share these data with the research community. Individuals interested in obtaining TILDA data access at this time should reach out to the TILDA project directly (https://tilda.tcd.ie/data/accessing-data/).
The Irish Longitudinal Study on Ageing (TILDA) is a major inter-institutional initiative led by Trinity College Dublin which aims to produce a massive improvement in the quantity and quality of data, research and information relating to older people and ageing in Ireland. Eligible respondents for this study include individuals aged 50 and over and their spouses or partners of any age. The study involves interviews on a one year basis with a sample cohort of residents of Ireland, collecting detailed information on all aspects of their lives, including the economic (pensions, employment, living standards), health (physical, mental, service needs and usage) and social aspects (contact with friends and kin, formal and informal care, social participation). Both survey interviews and physical and biological measurements are utilized.
The fifth wave of TILDA interviews were undertaken between January and December 2018. A total of 4,978 participants completed the self-interview.
Demographic and background variables include age, sex, marital status, household composition, education, and employment.
Japan 2000 National Survey on Family and Economic Conditions (NSFEC) (ICPSR 21120)
Japan 2009 National Survey on Family and Economic Conditions (NSFEC) (ICPSR 34647)
Japanese-American Research Project (JARP): a Three-Generation Study, 1890-1966 (ICPSR 8450)
Marital Instability Over the Life Course, 1983: [United States] (ICPSR 9200)
Marital Instability Over the Life Course [United States]: A Five-Wave Panel Study, 1980, 1983, 1988, 1992-1994, 1997 (ICPSR 2163)
Marital Instability Over the Life Course [United States]: A Six-Wave Panel Study, 1980, 1983, 1988, 1992-1994, 1997, 2000 (ICPSR 3812)
Marital Instability Over the Life Course [United States]: A Three-Wave Panel Study, 1980-1988 (ICPSR 9747)
Mexican Health and Aging Study (MHAS) (ICPSR 142)
The Mexican Health and Aging Study (MHAS) is a national longitudinal study of adults 50 years and older in Mexico. The study is a collaborative effort among researchers from the Universities of Pennsylvania, Maryland, and Wisconsin in the United States, and the Instituto Nacional de Estadistica, Geografia e Informatica (INEGI) in Mexico.
The baseline survey includes a nationally representative sample of Mexicans aged 50 and over and their spouse/partners regardless of their age. A direct interview was sought with each individual, and proxy interviews were obtained when poor health or temporary absence precluded a direct interview. Topics covered include: health behavior and health status, childhood and family background, migration history, sources and amounts of income, and housing environment.
The MHAS is partly supported by the National Institutes of Health/National Institute on Aging and the INEGI in Mexico. The MHAS was designed as a longitudinal study with protocols highly comparable to the Health and Retirement Study (HRS) of the United States.
Mexican Origin People in the United States: Detroit Pretest, 1978 (ICPSR 8000)
Midlife in the United States (MIDUS): Survey of Minority Groups [Chicago and New York City], 1995-1996 (ICPSR 2856)
Monitoring the Future: A Continuing Study of American Youth (12th-Grade Survey), 2002 (ICPSR 3753)
Monitoring the Future: A Continuing Study of American Youth (8th- and 10th-Grade Surveys), 1996 (ICPSR 2350)
Monitoring the Future: A Continuing Study of the Lifestyles and Values of Youth, 1989 (ICPSR 9397)
Monitoring the Future: A Continuing Study of the Lifestyles and Values of Youth, 1994 (ICPSR 6517)
National Family Research of Japan 2008 (ICPSR 36127)
National Longitudinal Survey of Mature and Young Women (ICPSR 34930)
National Survey of Families and Households, Wave 1: 1987-1988, [United States] (ICPSR 6041)
The National Survey of Families and Households (NSFH), Wave 1 (1987-1988) is the first of three waves in a longitudinal survey that was designed to study the causes and consequences of changes happening in families and households within the United States. At a time when the range of family structures was becoming more and more diverse, this study permitted a close examination of the resulting family compositions and household operations. One adult per household was randomly selected as the primary respondent, and there was a total of 13,007 respondents. In addition to the main interview conducted with the primary respondent, a shorter, self-administered questionnaire was given to the spouse or cohabitating partner, and also administered to the householder if he or she was a relative of the primary respondent.
A considerable amount of life-history information was collected, such as the respondent's family living arrangements in childhood, departures and returns to the parental home, and histories of marriage, separation, divorce, cohabitation, adoption, child custody arrangements, and stepfamily relations. Respondents were also asked about the relationship of household members to each other and the quality of their relationships with their parents, children, and in-laws. Information on economic well-being was also collected, including earnings from wages, self-employment income, interest, dividends, investments, pensions, Social Security, public assistance, and child support/alimony. Demographic information collected includes sex, age, marital status, education, and employment.
National Survey of Families and Households, Wave 2: 1992-1994, [United States] (ICPSR 6906)
The National Survey of Families and Households (NSFH), Wave 2 1992-1994, a longitudinal population-based survey of families and households in the United States, investigates the causes and consequences of changes in American family and household structure. This is the second wave of a three part survey. The current study, NSFH Wave 2, is the second follow up and was conducted in 1992-1994. The sample included all NSFH Wave 1 main respondents and spouse/partner with focal children and all other NSFH Wave 1 main respondents ages 45 and over in 2000, as well as their NSFH Wave 1 spouse/partner.
The Wave 2 survey included the following components: (1) an interview of all surviving members of the original sample via face-to-face personal interview, (2) a personal interview with the current spouse or cohabiting partner almost identical to the interview with the main respondent, (3) a personal interview with the original spouse or partner of the primary respondent in cases where this relationship had ended, (4) a telephone interview with "focal children" who were originally aged 13-18 in Wave 1, (5) a short telephone interview with "focal children" who were originally aged 5-12 in Wave 1, (6) short proxy interviews with a surviving spouse or other relative in cases where the original respondent had died or was too ill to interview, and (7) a telephone interview with a randomly-selected parent of the main respondent. Demographic information collected includes sex, age, marital status, education, and employment
National Survey of Families and Households, Wave 3: 2001-2003, [United States] (ICPSR 171)
National Survey of Family Growth, Cycle I, 1973 (ICPSR 7898)
New Immigrant Survey (ICPSR 174)
Norwegian Life History Study, 1971 (ICPSR 8545)
Project on Human Development in Chicago Neighborhoods (PHDCN): Family Environment Scale, Wave 1, 1994-1995 (ICPSR 13590)
Project on Human Development in Chicago Neighborhoods (PHDCN): Home and Life Interview, Wave 2, 1997-2000 (ICPSR 13630)
Project on Human Development in Chicago Neighborhoods (PHDCN): Home and Life Interview, Wave 3, 2000-2002 (ICPSR 13716)
Project on Human Development in Chicago Neighborhoods (PHDCN): Home Observation for Measurement of the Environment, Wave 1, 1994-1997 (ICPSR 13594)
Project on Human Development in Chicago Neighborhoods (PHDCN): Infant Assessment Unit, Wave 1, 1995-1997 (ICPSR 13579)
Project on Human Development in Chicago Neighborhoods (PHDCN): Interviewer Impressions (Primary Caregiver), Wave 2, 1997-2000 (ICPSR 13631)
Project on Human Development in Chicago Neighborhoods (PHDCN): Interviewer Impressions (Primary Caregiver), Wave 3, 2000-2002 (ICPSR 13718)
Quality of Canadian Life: Social Change in Canada, 1977 (ICPSR 7879)
Relationship Development and Health in Young Adults (ICPSR 36012)
Second Malaysian Family Life Survey: 1988 Interviews (ICPSR 9805)
Survey of Health, Ageing and Retirement in Europe (SHARE) (ICPSR 24981)
The Survey on Health, Ageing and Retirement in Europe (SHARE) is a multidisciplinary and cross-national panel database of micro data on the health, socio-economic status, and social and family networks of older adults (aged 50 years and over) throughout Europe. Designed to provide a full picture of the aging process, SHARE collects data on a range of topics including health conditions, physical and cognitive functioning, mental health, life satisfaction, employment, income, education, social networks, and social support mechanisms. The first wave of SHARE data collection occurred in 2004-2005, the second wave in 2006-2007, and the third wave in 2008-2009.
SHARE has been harmonized with the United States HEALTH AND RETIREMENT STUDY (HRS) [ICPSR6854], and the ENGLISH LONGITUDINAL STUDY OF AGEING (ELSA) [ICPSR0139].
Survey of Midlife in Japan (MIDJA 2), May-October 2012 (ICPSR 36427)
In 2008, with funding from the National Institute on Aging (NIA), baseline survey data for the Survey of Midlife in Japan (MIDJA), April-September 2008 were collected from a probability sample of Japanese adults (N=1,027) aged 30 to 79 from the Tokyo metropolitan area (ICPSR 30822). In 2009-2010 biomarker data was obtained from a subset of these cases (ICPSR 34969).
The survey and biomarker measures obtained parallel those in a national longitudinal sample of Americans known as Midlife in the United States or MIDUS (ICPSR 2760: MIDUS 1 and ICPSR 4652: MIDUS 2). The central objective was to compare the Japanese sample (MIDJA) with the United States sample (MIDUS) to test hypotheses about the role of psychosocial factors in the health (broadly defined) of mid- and later-life adults in Japan and the United States.
In 2012, with additional support from NIA, a longitudinal follow-up of the MIDJA sample was completed. The data collection for this second wave (N=657) largely repeated the baseline assessments. The goal of the follow-up wave was to conduct comparisons of longitudinal data available from the Japanese sample (MIDJA) and the United States sample (MIDUS) to test the hypothesis about the role of psychosocial factors in predicting health changes (including biomarkers) in both cultural contexts. Cultural influences on age differences in health and well-being were also of interest.
Demographic and background information included gender, age, education, marital status, household composition, and income.