Select interviews are flagged for validation and examined for consistency and response patterns. Respondents are re-contacted as necessary to verify information.
These revisions might include “patches” to the survey instrument to correct errors, as well as the addition of clarifying instructions for the interviewers.
For the NLSY79, respondents are offered an extra incentive to schedule their own interview within a certain time window.
Data collection during this early bird phase is web-based, with data being available for internal access virtually in real time.
Field interviewers call, email or text respondents who have not responded during the early bird window to schedule interviews.
After review, cases might be sent to the locating team, or additional strategies may be suggested to gain respondent cooperation.