nData releases are accompanied by cohort-specific codebook supplements.
nThese documents, organized in attachments and appendices, contain very detailed technical information about specific NLS variables.
§Example 1: Industry and
Occupation codes
§Example 2: Programming
code for created variables
nFor the NLSY79 and NLSY97, special Geocode Codebook Supplements are also produced. Similar to the main file supplements, these provide coding and other technical information for geographic variables.