The goal of the present study was to extend earlier work on the estimation of person theta using maximum likelihood estimation in R by accounting for rapid guessing. This paper provides a modified R function that accommodates person thetas using the Rasch or 2PL models and implements corrections for the presence of rapid guessing or informed…

This article extends the procedure outlined in the article by Raykov, Marcoulides, and Tong for testing congruence of latent constructs to the setting of binary items and clustering effects. In this widely used setting in contemporary educational and psychological research, the method can be used to examine if two or more homogeneous…

While much research has examined second language (L2) phonetic acquisition, less research has examined first language (L1) attrition in terms of the voice onset time (VOT) of voiceless stops. The current study examined L2 acquisition and L1 attrition in the VOT of word-initial voiceless stops among late English-Arabic and Arabic-English bilinguals…

The research is created to investigate the prediction of admission criteria for medical student achievement in chemistry in Saudi Arabia. It examines if the General Aptitude Test (GAT), the Scholastic Achievement Admission Test (SAAT), and English competence, can to a certain extent predict and foretell students' achievement in the chemistry. The…

Admission criteria can be used to predict Saudi student performance in college, but significant differences across several studies exists. This study explores the predictive power of admission criteria for college assignment using King Saud bin Abdulaziz University for Health Sciences as a model. Scores from high school and standardized tests were…

This article describes an approach to test scoring, referred to as "delta scoring" (D-scoring), for tests with dichotomously scored items. The D-scoring uses information from item response theory (IRT) calibration to facilitate computations and interpretations in the context of large-scale assessments. The D-score is computed from the…

Saudi students are required to take the General Aptitude Test (GAT), achieving a certain competency, in order to gain acceptance in matriculation programs, or to study abroad. GAT is surrounded with a great deal of controversy regarding it as a reliable admission factor for measuring a student's aptitude for success in higher education. The…

The study is designed to examine the predictive power of Saudi-admission criteria for student performance in an introductory biology course. It focuses on the second semester at King Saud bin Abdulaziz University for Health Sciences. The study addresses whether the General Aptitude test (GAT), the Scholastic Achievement Admission Test (SAAT), and…

There is consensus among those involved in teaching English as a foreign language (EFL) in the Saudi educational context that students' achievement in language learning is below expectations. Much research has been directed towards finding the reasons for low achievement amongst learners. However, very few studies have looked at parameters of…