A study with follow-up interviews of services for homeless and mentally ill persons (original sample of 163) had a very high success rate of over 70% in tracking this difficult to locate population. Techniques for locating clients are presented, as identified by a focus group of five researchers. (SLD)

This paper examines the impact of attrition among the women of the National Longitudinal Survey of Youth 1979 (NLSY79) and children in the NLSY79 Mother-Child Supplement (NLSY79-C). Attrition among the children is nonrandom with respect to mother's marital status, grandfather's completed schooling, and family income. These differences that are…

A study was conducted to determine the extent and nature on non-respondent bias in the follow-up survey in 1981 of Michigan secondary vocational education students from the class of 1980. The response rate to the annual survey has been approximately 76 percent in past years, yet there remains a significant non-response bias potential. This study,…

The field survey procedures employed and the response rates obtained in the First Follow-Up Survey of the National Longitudinal Study of the High School Class of 1972 (NLS) are described. The first step in data collection for First Follow-Up involved an extensive tracing operation to update name and address files. A newsletter was mailed out to…

This document provides the appendices for volume 1 of the final evaluation report of Project Developmental Continuity (PDC), a Head Start demonstration project initiated in 1974 to develop program models which enhance children's social competence by fostering developmental continuity from preschool through the early elementary grades.…

Texas Instruments has undertaken a research program with the goal of producing scientifically-based evidence of the effectiveness of graphing calculators and the "TI-Navigator"[TM] classroom networking system in the context of a professional development and curriculum framework. The program includes a two-year longitudinal study. The…

A group of high school self-reported dropouts and a group of simulated high school dropouts were compared with graduates in their participation rates, efforts required for data collection, and the overall quality of their responses in the National Longitudinal Study of the High School Class of 1972. The results indicate that dropouts are less…

The problem of attrition often arises in longitudinal studies when the researcher is unable to gather follow-up information for a sizeable percentage of the study participants at one or more of the planned follow-up stages. Since non-respondents frequently differ in important ways from respondents, the findings based solely on the respondents are…

The authors sought evidence of the effectiveness of the TI-Navigator classroom networking system for the second year of a two-year research study of Texas Instruments classroom technology. This randomized control trial compared Algebra I and Geometry instruction using the TI-Navigator system, which includes the TI-84 Silver Edition graphing…