There has been increasing interest in applying integrative data analysis (IDA) to analyze data across multiple studies to increase sample size and statistical power. Measures of a construct are frequently not consistent across studies. This article provides a tutorial on the complex decisions that occur when conducting harmonization of measures…

Purpose of the Study: Missing data are a common problem encountered while implementing measurement instruments. Yet the extent to which reliability, validity, average discrimination and difficulty of the test results are affected by the missing data has not been studied much. Since it is inevitable that missing data have an impact on the…

As a research methodology, qualitative research method infuses an added advantage to the exploratory capability that researchers need to explore and investigate their research studies. Qualitative methodology allows researchers to advance and apply their interpersonal and subjectivity skills to their research exploratory processes. However, in a…

Few empirical studies exist to guide researchers in determining the number of focus groups necessary for a research study. The analyses described here provide foundational evidence to help researchers in this regard. We conducted a thematic analysis of 40 focus groups on health-seeking behaviors of African American men in Durham, North Carolina.…

This manual provides guidance and documentation for users of the longitudinal kindergarten-fourth grade (K-4) public-use data file of the Early Childhood Longitudinal Study, Kindergarten Class of 2010-11 (ECLS-K:2011), which includes the first release of the public version of the third-grade data. This manual mainly provides information specific…

This volume documents the data collection of the 1990-91 Schools and Staffing Survey (SASS). People wishing to determine whether their research needs can be served by SASS data will find a description of the survey's contents and objectives in the Overview. This volume contains the following chapters: (1) "Overview"; (2) "Changes in…

This manual familiarizes data users with the procedures followed for data collection and processing of the high school transcript component of the National Education Longitudinal Study of 1988 (NELS:88). A second objective is to provide the necessary documentation for using the data files. Chapter 6 and appendix F, in particular, contain…

This codebook is one of a series designed to document the data collection of the 1990-91 Schools and Staffing Survey (SASS). The series contains the variable names and position numbers for all survey and sampling data. All data have been imputed to compensate for item nonresponse. This volume contains the restricted use codebooks for the SASS…

The National Household Education Survey (NHES) is a random digit dial telephone survey of households developed by the National Center for Education Statistics. It has been conducted in 1991, 1993, 1995, and 1996, with varying components each year. The NHES 91/93/95/96 CD-ROM contains an electronic codebook (ECB) program that, after being installed…

The 1992-93 National Study of Postsecondary Faculty (NSOPF-93), the second cycle of this study, surveyed institutions and faculty, with a sample of 974 public and private nonproprietary higher education institutions and 31,354 faculty members. The study was designed to provide a national profile of faculty, including their professional…