The major emphasis of the National Longitudinal Study of the High School Class of 1972 (NLS) has been directed toward individuals in the 1972 high school graduating class. Consequently, sampling parameters were established to ensure student representation, and the bulk of data collected were individual-level data. School-level data exist on a…

The problems inherent in analyzing data in which subjects are "nested" within hierarchical units (such as classrooms or schools), and thus are not independent of one another, are addressed through the use of Joreskog's LISREL model for analyzing covariance matrices. A solution to the problem is proposed and illustrated using data from…

Meant to study post secondary educational and vocational activities, the National Longitudinal Survey of the High School Class of 1972 (NLS) is reported to have consistently succeeded in overcoming diminishing response rates and sample attrition found in other longitudinal surveys. The purpose of understanding the focus and experiences affecting…

The fourth mail and personal interview followup survey from October 1979 to May 1980 is reported as part of the National Longitudinal Study of the High School Class of 1972 (NLS). The report is methodological, historical and descriptive in nature, but contains no analytical results. Reference to earlier reports is provided in determining post…

Two sampling designs were compared for the planned 1978 national longitudinal survey of high school seniors with respect to statistical efficiency and cost. The 1972 survey used a stratified two-stage sample of high schools and seniors within schools. In order to minimize interviewer travel costs, an alternate sampling design was proposed,…

The average design effects for statistics estimated from the base-year National Longitudinal Study data are presented. Attempts to partition the effects into those due to stratification, clustering, and unequal weighting are discussed. The expected increases in subpopulation sample sizes due to oversampling are calculated and compared with the…

This supporting statement accompanied the first followup questionnaire for the National Longitudinal Study of the High School Class of 1972, when it was submitted for government clearance. The first part of the statement gives the background, uses, and justification of the survey; the largest part describes the plans for the first follow-up…

A complex two-stage sample selection process was used in designing the National Longitudinal Study of the High School Class of 1972. The first-stage sampling frame used in the selection of schools was stratified by the following seven variables: public vs. private control, geographic region, grade 12 enrollment, proximity to institutions of higher…

An overview of the National Longitudinal Study of the High School Class of 1972 (NLS) is provided. Section one describes the research design for the base-year and first through third followup surveys. Section two summarizes findings from data analyses of the first followup and base-year, completed before September 1975. The findings are presented…

An outline is presented of the design of the followup surveys of the National Longitudinal Study of the High School Class of 1972 (NLS). The NLS is an extensive study of the educational, vocational, and personal development of high school graduates, and the personal, familial, social, institutional, and cultural factors that contribute to that…

Longitudinal measures of change are the most important kinds of estimates being produced from the National Longitudinal Study of the High School Class of 1972 (NLS). Several topics are presented in this report, most of which build on previous variance components analyses. The major areas covered are effects of stratification and clustering,…

After reviewing the research design, objectives, and basic conceptual model for the National Longitudinal Study of the High School Class of 1972 (NLS), this document describes the survey plan and issues for the third followup survey. Data analyses--both those that are in progress or planned--are summarized. These activities include composite score…

The National Longitudinal Study of the High School Class of 1972 (NLS) is a federally supported longitudinal study of a national sample of some 23,000 young people first surveyed as high school seniors in the spring of 1972. The historical precedents of such a study include the work of Friend and Haggert in a Boston settlement house, Louis…

The conceptual model of the National Longitudinal Study of the High School Class of 1972 (NLS) has been modified from James Trent's General Educational Development Model. The NLS model is presented and briefly compared with the General Educational Development Model. The major portion of this document consists of NLS questionnaire items or…

This memorandum demonstrates a variance components methodology for partitioning the overall design effect (D) for a ratio mean into stratification (S), unequal weighting (W), and clustering (C) effects, so that D = WSC. In section 2, a sample selection scheme modeled after the National Longitudinal Study of the High School Class of 1972 (NKS)…