The separate young adult survey began in 1994. In 1990, personal interviews were conducted using both paper and computerized questionnaires. Dependent interviewing For each interview, there is an extensive preload of maternal, household, employment, and personal information that was gathered in previous interviews. Children under age 15 must live with their mother at time of interview. An attempt is made to reach youths older than age 14 who no longer live with their mothers if the youths previously responded to the survey.
Some information is collected in an event history format.
Processing - Family composition editing. In addition to the public-use files, geocode files are available to researchers who agree in writing to adhere to the BLS confidentiality policy and whose projects further the mission of BLS and the NLS program to conduct sound, legitimate research in the social sciences. The geocode files include the State, metropolitan area, and county of residence of each respondent in each survey year. The files also include selected environmental variables from the City and County Data Books. Researchers who are granted access to the geocode files are permitted to use the data are permitted to use the data at their own facilities.