Item response theory (IRT) methodology is introduced as a tool for improving assessment instruments used with people who have disabilities. Need for this approach in rehabilitation is emphasized; differences between IRT and classical test theory are clarified. Concepts essential to understanding IRT are defined, necessary data assumptions are…

Provides a brief overview of quantitative estimates of Colombian emigration including a discussion of how estimates were prepared. Concludes that estimates of international migration from Colombia are inflated and that such migration is not as significant as some observers claim. (CMG)

Notes that family researchers are increasingly using panel data to investigate family processes. To aid family researchers in understanding panel analysis, focuses on two panel analysis strategies--structural equation model techniques and methods of event history analysis. Several additional methods of analyzing panel data are also briefly…

Reviews methods for analyzing outcome data when some data are missing. Presents approach for comparing outcome results in two-group, randomized design with missing data. Proposed analysis is based on concept of "modeling our ignorance" by examining all possible outcomes, given known number of missing results with binary outcome, and then…

The state of the psychotherapy termination literature to date might best be characterized as inconclusive. Despite decades of studies, almost no predictors of premature termination have emerged consistently. An examination of this literature reveals a number of recurrent methodological-analytical problems that likely have contributed substantially…

Describes two new measures of consistency which refer to the extent to which more closely related scale types are found together in Holland's Self-Directed Search sort. One measure is based on the hexagonal model for use with three-point codes. The other is based on conditional probabilities for use with two-point codes. (Author/ABL)

Asserts that, despite its growing popularity, there still exists confusion about the nature and proper use of logistic regression in family studies. Presents nontechnical discussion of logistic regression, with illustrations and comparisons to better-known procedures. Concludes that logistic regression can be powerful statistical procedure when…

Briefly describes core ideas behind LISREL (linear structural relationship) approach for studying structural models. Addresses some common issues with which family investigators deal, focusing on problems that researchers often face; questions they raise; and decisions they need to make in the process of model specification, estimation,…

Notes that researchers are often required to examine specific model under two different situations. Cites studies in which authors compared results descriptively without use of inferential statistics. Describes use of series of regression tests to compare two situations statistically. Gives example from recent study to illustrate technique.…

Outlines the recent transition, within educational research, from conflict to cooperation between quantitative and qualitative approaches. Asserts that compatibility is based on a confusion between method as technique and method as logic of justification. Argues that the claim of compatibility cannot be sustained and blocks an interesting and…

Discusses current practices for statistical assessments of employment discrimination and suggests nonstatistical techniques that can be used to aid in interpreting results of statistical analyses. The techniques incorporate principles of Boolean algebra and allow holistic comparison of categories of similarly situated individuals. (CMG)

Reviews application of causal modeling in family research. Discusses uses of and critics' views of causal modeling to explain reasons for controversial position of causal modeling in social sciences. Reviews requirements for effectively implementing causal modeling strategy, commenting on some attempts of family researchers to use it. Includes…

Notes that intergenerational theories of family functioning sparked interest in empirical investigations that test intergenerational relationships. Presents test of difference scores enabling researchers to compare related and unrelated dyads, thus creating comparison group when using only two generations. Contrasts procedure with correlational…

Presents a research methodology related to needs assessment that can be used in a variety of settings in vocational education. It involves the use of small-group sessions and has five steps: introduction to meeting, silent generation of ideas, round-robin listing, discussion for clarification, and ranking of items. (Author/CT)

Demonstrates that magnitude-of-effects (ME) estimates vary in susceptibility to sample-size bias depending on whether they are directional or nondirectional estimates. Also demonstrates that study characteristics that influence size of ME estimates can be explicitly taken into account when comparing studies. Emphasizes need to consider study…