Differential Item Functioning (DIF) is a widely used term in test development literature. It is very important to analyze test's data for DIF because It is a serious threat to validity. If the same data matrix was transposed, similar analysis can be carried for Differential Person Functioning (DPF). The purpose of this paper is to introduce and…

Most psychotherapy research uses a one-with-many design, in which each therapist (the one) treats multiple clients (the many), which raises the challenge of nonindependent data. We present a statistical model for analyzing data from studies that use a one-with-many design. This model addresses the problems associated with nonindependence and can…

There are both quantitative and methodological techniques that foster the development and maintenance of a cumulative knowledge base within the psychological sciences. Most noteworthy of these techniques is meta-analysis, which allows for the synthesis of summary statistics drawn from multiple studies when the original data are not available.…

The overarching aim of the research reported here was to investigate the effects of task structure and storyline complexity of oral narrative tasks on second language task performance. Participants were 60 Iranian language learners of English who performed six narrative tasks of varying degree of structure and storyline complexity in an assessment…

Recent reviews of recognition receiver operating characteristics (ROCs) claim that their curvilinear shape rules out threshold models of recognition. However, the shape of ROCs based on confidence ratings is not diagnostic to refute threshold models, whereas ROCs based on experimental bias manipulations are. Also, fitting predicted frequencies to…

This research study focused on freshman attitudes towards engineering in a newly implemented cornerstone sequence that emphasized holistic design experiences. The students' initial attitudes and changes in these attitudes were examined with the explanatory mixed methods approach that allows a sequential examination of the target population with…

Multicultural education professional development training at the district level for teachers who teach at the elementary level in one southeastern US district has reached only a small number of the assigned teachers. Multicultural education professional development training could bring awareness to a district's professional development department…

Biomedical research has produced vast amounts of new information in the last decade but has been slow to find its use in clinical applications. Data from disparate sources such as genetic studies and summary data from published literature have been amassed, but there is a significant gap, primarily due to a lack of normative methods, in combining…

The Internet Age has seen the emergence of richly annotated image data collections numbering in the billions of items. This work makes contributions in three primary areas which aid the management of this data: image representation, efficient retrieval, and annotation based on content and metadata. The contributions are as follows. First,…

This study, based on experiential play methodology was used to explore student engagement while playing "Medal of Honor (2002)" and "Call of Duty (2003)". It identifies some of the key issues related to the use of video games and simulations during the training phase of game play. Research into the effects of gaming in education has been extremely…

This study used a grounded theory methodology to examine the experiences of deaf middle school students attending a program for deaf children in a public school to answer the following question: How do deaf children in middle school construct meaningful texts? The students were in one of two self-contained classes taught by a teacher of the deaf.…

This qualitative study explored African American teachers' perceived levels of support with regard to mentoring, internal supports, external supports, and other contributing variables to determine the extent to which they fostered sustained employment in suburban school districts . The research data included input from 61 African American teacher…

Professional development within many school districts has become more closely linked to school or district achievement goals, daily practice and student assessment data. Both empirical research and experiential-based writing in the field have suggested that data-driven job-embedded professional development supports teacher learning and improved…

Elementary teachers' attitudes toward professional development and ways to increase teachers' participation in professional development were explored in this qualitative, grounded theory. The researcher conducted five focus groups comprised of elementary classroom teachers, special area teachers, and Instructional Facilitators. Data from the focus…

The purpose of this study was to conduct a program evaluation of a K-5 Gifted Education Program. Program evaluation addressed how well the gifted education program studied met the National Association of Gifted Children standards. In addition, this study included stakeholder perceptions of the current gifted education program K-5. This program…