Used statistical procedures that have become routine in other social sciences to analyze data from clinical service records. Despite absence of control groups, nonrandom assignment of clients to treatment conditions, and incomplete records, effective analyses of psychotherapeutic process were possible. Graphical methods for summarizing large data…

This document discusses social survey research in which the need for identification of respondents may bring social research into conflict with the law and social custom. The paper deals with two features of the conflict--the products of such research, and the way in which privacy of the respondent can be assured regardless of the product. The…

A major challenge for researchers and educators has been to discern the effect of ICT use on student learning outcomes. This paper maps the achievements in Year 10 Science of two cohorts of students over two years where students in the first year studied in a traditional environment while students in the second took part in a blended or e-learning…

Outcome research in counseling has generally overlooked the problem that main effects of treatment may have little meaning in the presence of interactions, and that variables not represented in research designs have no opportunity to demonstrate their interactive effect. Comparison of several groups in terms of mean differences or average gains,…

This document is designed to provide an understanding of the major longitudinal issues and problems, a rationale for longitudinal studies, and the advantages and disadvantages of using longitudinal studies for evaluation and accountability purposes when applied to vocational education. Following an introductory chapter, chapter 2 presents a…

Attrition, or the loss of study subjects, confounds the subject identification process. Design attrition occurs when subjects initially involved in the study are excluded because of changes in study focus or rationale. Data collection attrition occurs when subjects are excluded because they were not contacted by the data gatherer, or because the…

One of a series of sixteen knowledge transformation papers, this paper examines the advantages and disadvantages of longitudinal studies as a method for evaluating vocational programs. First, longitudinal methods are defined for the differences between them and cross-sectional studies are established. The results of a literature search conducted…

A longitudinal study was planned to track a class in a prekindergarten program to determine program effectiveness. There are many problems in conducting a longitudinal study, most of which revolve around the long-term commitment required. A carefully designed information system is important. For the study in question, computer software and…

This document provides a current assessment of the role and character of longitudinal studies. Eighteen articles define this type of study, discuss its applications to the educational process, advise when to use longitudinal inquiry, and describe barriers formed by lack of statistical techniques in manipulating the data. The traditional argument…

The problem of the appropriate comparison group for bereavement studies is discussed. The use of the retrospective pretest design is illustrated through a longitudinal study of bereavement outcome following pregnancy loss, involving 138 bereaved women and a comparison group of 215 currently pregnant women. (SLD)

Global economic transformations have never been as dramatic as in the twentieth century. Most countries have experienced radical changes in the standards of income per capita, technology, fertility, mortality, income inequality and the extent of democracy in the course of the past century. It is the goal of many disciplines--economics, history,…

Some of the problems unique to evaluation research, in particular to the evaluation of longitudinal studies of social programs, are presented. A working model found to be useful in structuring compensatory education program evaluation activities is also offered. Since the goals of social programs such as Head Start are dynamic rather than static,…

The difficulties in evaluating bilingual education appear to have prevented success in all but a few evaluation attempts, but better and more meaningful evaluation is neccessary in order to identify the strengths and weaknesses of bilingual programs. Many bilingual programs are undergoing constant modification, adequate assessment instruments have…

Possible causes for the discrepancy between the ABT report on the national Project Follow Through and the Saint Louis, Missouri program were discussed: (1) ABT data were positively biased because of non-random, differential attrition from the program and control groups; (2) positive ABT data were due to use of a particular cohort group; or (3)…

Some students are excluded from the National Education Longitudinal Study of 1988 (NELS:88) because of an inability, whether due to physical, mental, or linguistic barriers, to participate in studies requiring questionnaire or cognitive test completion. The implications of this exclusion for sample representativeness, national estimation, and…