Summary of Data Collection Instruments
The following is a list of all data collection instruments from 1957-1994 for the Wisconsin Longitudinal Study. Data has been collected from the original respondents, their siblings, and public sources. Click the links for details on what data was collected from each instrument.
Identifying information and administrative data
April, 1957 Questionnaire (all seniors)
October, 1957 Mail Questionnaire (1/6 sample parents)
Wisconsin Tax Department Data - Public Records (1/3 sample and Top 10% IQ)
1964 Mail Questionnaire Data (1/3 sample and Top 10% IQ parents)
1975 Telephone Questionnaire Data (1/3 sample Class of 1957)
1977 Sibling Telephone Questionnaire Data (Selected siblings of 1/3 sample of Class of 1957)
1992 Telephone Questionnaire Data (1/3 sample Class of 1957)
Mail Questionnaire sent to 1992/93 telephone survey respondents
1993/94 Telephone Questionnaire Data (Selected Siblings)
Mail Questionnaire sent to 1993/94 sibling telephone survey respondents