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The NLSY79 Child and Young Adult cohort is a longitudinal project that follows the biological children of the women in the NLSY79. As of 2018, more than 10,000 children had been interviewed in at least one survey round. To date, a total of 11,545 children have been identified as born to interviewed NLSY79 mothers. Data are now available from 1986 to 2018, representing 17 survey rounds for the child sample and 13 for young adults in that time span.
Age of the NLSY79 Child & Young Adult cohorts: Born between 1970 and 2014. At the time of the first interview in 1986, child ages ranged from 0-23 years. In 2018, interviewed NLSY79 mothers completed a limited number of questions about health and schooling for children in the household at least part-time who were 0 to 18 years of age as of the end of 2018, and children 12 and older were included in the Young Adult data collection.
Number of respondents in survey: 11,545 children born to NLSY79 mothers as of 2018. The size of the Child-Young Adult sample, which increases over time, depends on the number of children born to female NLSY79 respondents.
Sample sizes: 5,255 children reported by 2,922 interviewed mothers in 1986; 6,109 children under age 15 and 980 young adults reported by 3,464 mothers interviewed in 1994 (the first Young Adult survey year). In 2016, interviewed NLSY79 mothers completed a limited number of questions about health and schooling for 236 children 18 years old or younger, and 4,965 children 12 and older were interviewed as Young Adults. See Sample Design for information about sample restrictions and exclusions over the period of the survey. Learn more about the survey Interview Methods, Retention, and Fielding History and Sample Issues.
In 1986, a separate survey of all children born to NLSY79 female respondents began, greatly expanding the breadth of child-specific information collected. The children of NLSY79 female respondents were assessed and interviewed every two years through 2014. In 2016, only the mother-reported assessments were completed as part of the Mother Supplement. In 2018, no mother-reported assessments were completed, but mothers were asked many of the child health and schooling questions from the Mother Supplement. The assessments measure cognitive ability, temperament, motor and social development, behavior problems, and self-competence of the children as well as the quality of their home environment. Specific assessments include:
Certain assessments and supplemental reports are collected from the child's mother. This includes child demographic and family background characteristics, and information on the child's home environment, including maternal emotional and verbal responsiveness and involvement with her child. Mothers report on Head Start and preschool enrollment, schooling, grade repetition, school behavior, educational expectations, peer relations, and religious attendance and training for their school-age children. Detailed health information and physical characteristics are collected for each child, including:
Geographic residence information is available for all children and young adults. Because respondents in the Child sample must live with their mothers at least part of the time to be included in the sample, users interested in residence data must access the main NLSY79 geocode data files and merge the mother's geographic data with the child information in the NLSY79 Child/Young Adult file. (More information about the main NLSY79 geocode files is available in the NLSY79 User's Guide.) For Young Adult respondents, the county and state of residence are provided in a separate file on the main NLSY79 geocode CD. A detailed description of the Young Adult geographic variables available is provided in the Geographic Residence & Geocode Data section. Through 2002, both the main NLSY79 and Young Adult geocode files also include contextual variables on topics such as demographics of the local population, income and poverty levels, and crime rates. For all survey years, researchers can use the geocode data to match NLSY79 data with other data sources to investigate a wide variety of community characteristics and contextual variables.
The NLSY79 Child/Young Adult files can be combined with information from the complete longitudinal record of the NLSY79 mothers, by merging with extracts from the main Youth. The NLSY79 main Youth file contains histories of employment, education, income, training, work attitudes, aspirations, health, marriage, fertility, household composition, and residence. Information is also available on childcare, substance use, illegal activities, aptitude, and selected social-psychological scales such as the Rosenberg Self-Esteem, the Rotter Internal-External Locus of Control, women's roles, the Pearlin Mastery, and the CES-D depression scale. The Child/Young Adult dataset contains a number of created variables providing information on the mother with respect to the child's life situation. These constructed variables, drawn from the mothers' record, include: family background, household composition, educational background of members of the household, and maternal health history. The dataset also includes information on the childcare experiences during the first three years of life for all children of a least one year of age.
The availability of comprehensive data collected throughout childhood and into adulthood on the Children of the NLSY79, coupled with longitudinal information on the family background, education, employment histories, and economic well-being of the NLSY79 mothers, provide researchers with a unique opportunity to examine the linkages between maternal-family behaviors and attitudes and subsequent child development as well as adult outcomes. Because information is collected for all children born to female respondents, the NLSY79 Child/Young Adult data also offer opportunities for comparing developmental and other outcome measures between siblings and cousins. The relatively large sample of siblings and cousins permits researchers to explore within- and cross-family effects to a greater extent than is typically possible.
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