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Health and Retirement Study (HRS) (ICPSR 6854)

Released/updated on: 2006-04-06

Geographic coverage: United States

The University of Michigan Health and Retirement Study (HRS) is a longitudinal panel study that surveys a representative sample of approximately 20,000 people in America, supported by the National Institute on Aging and the Social Security Administration.

The HRS aims to provide multidisciplinary data that researchers can use to address important questions about the challenges and opportunities of aging. The HRS includes the "original" HRS and the Asset and Health Dynamics Among the Oldest-Old (AHEAD) study. These studies were merged in 1998 and now represent the United States population over age 50. Two new cohorts were added in 1998: the Children of the Depression (born 1924-1930) and the War Babies (1942-1947). A fourth cohort, the Early Baby Boomers (1948-1953), was added in 2004; a fifth cohort, the Mid Baby Boomers (1954-1959), was added in 2010; and in 2016, the Late Baby Boomers cohort (1960-1965) became the sixth.

Questionnaire topics include physical and cognitive functioning, retirement plans, family structure and transfers, demographic characteristics, housing, employment status, income, disability, health insurance, pension plans, job history, and attitudes, preferences, and expectations for the future. The survey data are linked with administrative records from the Employer Pension Study (1993 and 1999), National Death Index, Social Security Administration earnings and projected benefits data and W-2 self-employment data, and Medicare files.

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Midlife in the United States (MIDUS 2): Cognitive Project, 2004-2006 (ICPSR 25281)

Released/updated on: 2023-02-21

Geographic coverage: United States

Time period: 2004-01-01--2006-01-01

In 1994/1995, the MacArthur Midlife Research Network carried out a national survey of over 7,000 Americans aged 25 to 74. The purpose of the study was to investigate the role of behavioral, psychological, and social factors in understanding age-related differences in physical and mental health. A description of the study and findings from it are available at the MIDUS website.

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). The purpose of the Cognitive Project was to determine how cognition is related to overall mental and physical health. Specific goals were: (1) to characterize the nature and range of midlife cognitive performance, relative to those younger and older, across multiple domains in a nationally representative sample (MIDUS); and (2) to examine the relationship between biopsychosocial factors (e.g., SES, health status, health-promoting behaviors, metabolic and cardiovascular biomarkers, depression, personality, control beliefs, stressful life events) and individual differences in cognitive functioning.

The development of a cognitive battery for the second wave of testing of the Midlife Development in the United States (MIDUS) study provided an opportunity to examine the cognitive performance of young, middle-aged and older adults from a wide range of education levels in a large-scale, national sample. As part of the Cognitive Project of the MIDUS II the Brief Test of Adult Cognition by Telephone (BTACT) (Lachman & Tun, 2008; Tun & Lachman, 2006) was administered. More information about the BTACT can be found at the Brandeis website. The BTACT represents the first comprehensive cognitive battery, including measures of speed and reaction time, to be administered by telephone to a national sample across the adult years and into later life. With a response rate of over 86 percent for the cognitive testing component of the MIDUS II, a cognitive data set of unprecedented range in terms of age, gender, socioeconomic status (SES), education, and geographic diversity was produced.

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Project on Human Development in Chicago Neighborhoods (PHDCN): Home and Life Interview, Wave 2, 1997-2000 (ICPSR 13630)

Released/updated on: 2005-12-06

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 composing the Longitudinal Cohort Study was the Home and Life Interview. The Home and Life Interview was a restructured interview based on the Home Observation for Measurement of the Environment (HOME) inventory used in Wave 1. The Home and Life Interview, like the HOME inventory, sought to observe the developmental environment in which children belonging to the Longitudinal Cohort Study sample were raised. The Home and Life Interview was designed to capture the absence or presence of certain cognitive stimuli, including varied learning experiences and diverse educational materials. The Home and Life Interview also measured the extent and nature of the interactions that occurred between the subject and his or her primary caregiver. In contrast to Wave 1, particular emphasis was placed on evaluating the relationship between the subject and the subject's father or, in the father's absence, a male father figure. An important feature of the Wave 1 HOME inventory was the data collected that described the interior and exterior conditions of the respondent's home and neighborhood. Similar observations were recorded, however, for Wave 2. This information was documented in the Interviewer Impressions data found in PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): INTERVIEWER IMPRESSIONS (PRIMARY CAREGIVER), WAVE 1, 1997-2000 (ICPSR 13631) and in PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): INTERVIEWER IMPRESSIONS (SUBJECT), WAVE 1, 1997-2000 (ICPSR 13632).

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Project on Human Development in Chicago Neighborhoods (PHDCN): Home Observation for Measurement of the Environment, Wave 1, 1994-1997 (ICPSR 13594)

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 composing the Longitudinal Cohort Study was the Home Observation for Measurement of the Environment (HOME) inventory. The HOME inventory sought to observe the developmental environment in which children belonging to the Longitudinal Cohort Study sample were raised. The HOME inventory was designed to capture the absence or presence of certain cognitive stimuli, including varied learning experiences and diverse educational materials. The HOME inventory also measured the extent and nature of the interactions that occurred between the subject and his or her primary caregiver, the subject and the subject's father (if the father was not the primary caregiver), and the subject and other family members. The PHDCN version of the HOME inventory also assessed the physical conditions in and around the respondent's home, taking careful note of the layout of the streets and buildings comprising the neighborhood.

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Project on Human Development in Chicago Neighborhoods (PHDCN): Infant Assessment Unit, Wave 1, 1995-1997 (ICPSR 13579)

Released/updated on: 2006-02-17

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. Part of the Longitudinal Cohort Study was the Infant Assessment Unit (IAU). The objective of the IAU was to observe how prenatal and postnatal conditions affect the health and cognitive functioning of infants during the first year of life. Consisting of several instruments, the IAU sought to measure infant cognition and quantify the experiences of the sampled infants from Cohort 0 during their first 12 months of life. Additionally, the IAU examined the circumstances surrounding the mother's pregnancy and the subsequent care received by the infant.

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Sacramento Area Latino Study on Aging (SALSA Study), 1996-2008: Neuropsychological Exam Data (ICPSR 29323)

Released/updated on: 2017-02-23

Geographic coverage: Sacramento, United States, California

Time period: 1996-01-01--2008-01-01

The Sacramento Area Latino Study on Aging (SALSA Study) project tracked the incidence of physical and cognitive impairment as well as dementia and cardiovascular diseases in elderly Latinos in the Sacramento, California, region. The SALSA project aimed to assess cognitive, physical, and social functions, which include the ability to follow instructions, to perform certain movements, and to interact with others. The project explored the effects that cultural, nutritional, social, and cardiovascular risk factors have on overall health and dementia, and examined the association between diabetes and functional status. This study contains the neuropsychological exam data from the SALSA project, which includes data reflecting tests of respondents' verbal and non-verbal semantic memory object naming, spatial abilities pattern recognition, verbal attention span, and verbal conceptual thinking. Demographic information includes age given at follow-up visits, language, and educational level.