Background: Validity is a notable concept in language testing which has concerned many researchers and scholars in the field of language testing due to its importance in decision making process. Tests' results always introduce consequences to test takers' lives which emphasizes the need to ensure their validity. Detecting and delineating the…

This study investigates two models of L2 vocabulary acquisition at an advanced L2 level: L1 lemma mediation and the revised hierarchical models. Proponents of the L1 lemma mediation model postulate that advanced L2 learners map L2 words to L1 meanings or concepts, whereas proponents of the revised hierarchical model argue that the increasing…

In this study, we assessed the invariance in the factor structure underlying English-language proficiency for two groups of adolescent learners in Japan: students in middle school (ages 13-15 years) and students in high school (ages 16-18 years). Language proficiency was measured using the "TOEFL Junior"® Comprehensive test, an…

In the literature of second language teaching and learning, the use of students' first language (L1) has been an issue of debate for many years. Despite the changing state of teaching and learning aspects over the years, the belief that L1 should not be used in English as a Foreign Language (EFL) classrooms has stood the test of time.…

This study explored the relationships among language proficiency, two selected test-taker characteristics (i.e., topical knowledge and anxiety), and integrated speaking test performance. Data collection capitalized on three sets of instruments: three integrated tasks derived from TOEFL-iBT preparation materials, the state anxiety inventory created…

In this study I examined the dimensionality of the latent ability underlying language use that is needed to fulfill the demands young learners face in English-medium instructional environments, where English is used as the means of instruction for teaching subject matters. Previous research on English language use by school-age children provided…

This study investigated the relationship between latent components of academic English language ability and test takers' study-abroad and classroom learning experiences through a structural equation modeling approach in the context of TOEFL iBT® testing. Data from the TOEFL iBT public dataset were used. The results showed that test takers'…

Previous research in cognitive diagnostic assessment (CDA) of L2 reading ability has been frequently conducted using large-scale English proficiency exams (e.g., TOEFL, MELAB). Using CDA, it is possible to analyze individual learners' strengths and weaknesses in multiple attributes (i.e., knowledge, skill, strategy) measured at the item level.…

This study explores the potential for automated indices related to speech delivery, language use, and topic development to model human judgments of TOEFL speaking proficiency in second language (L2) speech samples. For this study, 244 transcribed TOEFL speech samples taken from 244 L2 learners were analyzed using automated indices taken from…

This study explores the potential for automated indices related to speech delivery, language use, and topic development to model human judgments of TOEFL speaking proficiency in second language (L2) speech samples. For this study, 244 transcribed TOEFL speech samples taken from 244 L2 learners were analyzed using automated indices taken from…

This study examined the construct validity of the TOEFL iBT Speaking subsection for the purposes of international teaching assistant (ITA) certification, a purpose for which it was not specifically designed. The factor structure of the new TOEFL was compared with that of another language performance test in use at a major American research…

The present study explores the relationship between controlled productive knowledge of collocations and L2 proficiency, the role of frequency in controlled productive knowledge of collocations, and the quantifiability of controlled productive collocational knowledge growth alongside L2 proficiency and word frequency levels. A proficiency measure…

This study investigated the relationship between examinee proficiency and the structure of the Test of English as a Foreign Language (TOEFL) and the Speaking Proficiency in English Assessment Kit (SPEAK). Specifically, using multi-group structural equation modeling, this study tested two competing hypotheses about the relationship: whether or not…

Rauding theory states that two factors, accuracy and rate, explain nearly all the variance in the general reading ability of American schoolchildren (Carver, 1999). Using Structural Equation Modeling (SEM) and regression, this dissertation investigated to what extent the Rauding model could be applied to 92 Japanese university aged young adults…

Investigated the nature of second-language proficiency with respect to its divisibility and components. The correlated-traits and second-order hypotheses were evaluated using 354 students learning English-as-a-Second-Language, a wide range of language proficiency measures, and comfirmatory data-analytic techniques. (36 references) (Author/OD)