Risks of life on the street caused by inclement weather, harassment, and assault threaten the unsheltered homeless population. We address some challenges of enumerating the street homeless population by testing a novel capture-recapture (CR) estimation approach that models individuals' intermittent daytime visibility. We tested walking and…

Educational assessment and, more broadly, educational research in the United States have entered into an era characterized by a dramatic increase in the prevalence and importance of test score use in accountability systems. This volume covers a selection of contemporary issues about testing science and practice that impact the nation's public…

The study aimed at finding out whether teachers can identify the courses of reading disabilities in learners. It intended to establish whether teachers have adequate knowledge of identifying learners with reading disabilities, determine the proportion of non-readers in grade five. It also investigated the existing methods and materials teachers…

The Monitoring the Future (MTF) study is an ongoing series of national surveys of American adolescents and adults that has provided the nation with a vital window into the important, but largely hidden, problem behaviors of illegal drug use, alcohol use, tobacco use, anabolic steroid use, and psychotherapeutic drug use. For more than a third of a…

This paper reviews research based on the psychological autopsy (PA) method applied to the study of suicide. It evidences the presence of a number of methodological problems. Shortcomings concern sampling biases in the selection of control subjects, confounding influences of extraneous variables, and reliability of the assessment instruments. The…

An experiment is described which uses a real-world sample of lawn fertilizer in a simple exercise to illustrate problems associated with the sampling step of a chemical analysis. A mixed-particle fertilizer containing discrete particles of iron oxide (magnetite, Fe[subscript 3]O[subscript 4]) mixed with other particles provides an excellent…

In these days where "accountability" is the byword, organizations more and more frequently seek to evaluate their programs. They often hire outside evaluators to help them assess the effectiveness of their programs, to find out what works and what doesn't, and to determine what programmatic changes would be beneficial. ActKnowledge, a…

The "Where Did They Go?" study, co-funded by the BC Council on Admissions and Transfer (BCCAT) and the Canadian Council on Learning (CCL), was designed to complement research undertaken under the auspices of the Student Transitions Project (STP) which has tracked the public post-secondary participation of BC high school graduates from…

A reasonable expectation of textbooks used in Christian schools is that they should regularly incorporate biblical content. It is also reasonable to expect the biblical content to be integrated--not segregated--to influence matters such as worldview, biblical relevance, character, and integrative skills. This expectation was tested via a…

In this paper an attempt is made to highlight some issues of interpretation of statistical concepts and interpretation of results as taught in undergraduate Business statistics courses. The use of modern technology in the class room is shown to have increased the efficiency and the ease of learning and teaching in statistics. The importance of…

The article examines the perceptions of managers, academics and technical staff in relation to the transfer of training resulting from their participation in out-country training funded by Bhutan's Ministry of Education. Out-country training refers to in-service education, training and professional development programs, especially in relation to…

It is argued in this paper that generalizability theory provides a uniquely useful framework for defining and quantifying the dependability of data for decision making. It does so by requiring careful specification of the conditions of measurement and the anticipated sources of variation in the results of the measurement procedure. A distinction…

Using longitudinal survey data collected in collaboration with a treatment program, this paper estimates the economic impacts of antiretroviral treatment. The responses in two outcomes are studied: (1) labor supply of treated adult AIDS patients; and (2) labor supply of individuals in patients' households. Within six months after treatment…

As strongly suggested by recent work, patterns of gender difference can change because of changes in the selectivity of the sample itself. This is a statistical influence connected with the distributions of female and male scores, rather than a substantive influence related to demographic characteristics of the sample such as age or ethnicity. It…

Sampling error refers to variability that is unique to the sample. If the sample is the entire population, then there is no sampling error. A related point is that sampling error is a function of sample size, as a hypothetical example illustrates. As the sample statistics more and more closely approximate the population parameters, the sampling…