Word frequency has a long history of being considered the most important predictor of word difficulty and has served as a guideline for several aspects of second language vocabulary teaching, learning, and assessment. However, recent empirical research has challenged the supremacy of frequency as a predictor of word difficulty. Accordingly,…

Second-language (L2) testing researchers have explored the relationship between speakers' overall speaking ability, reflected by holistic scores, and the speakers' performance on speaking subcomponents, reflected by analytic scores (e.g., McNamara, 1990; Sato, 2011). These research studies have advanced applied linguists' understanding of how…

The knowledge about affix plays a vital role in the development of word knowledge and vocabulary acquisition. A test for diagnostic information on the level of affix knowledge would be useful in order to inform the test users of what learners have gained or lacked in this integral component of vocabulary knowledge. This paper reports the…

In this paper, we describe and evaluate two state-of-the-art systems for identifying and correcting writing errors involving English articles and prepositions. Criterion[superscript SM], developed by Educational Testing Service, and "ESL Assistant", developed by Microsoft Research, both use machine learning techniques to build models of article…

This study used a mixed methods research approach to examine how native English-speaking (NS) and non-native English-speaking (NNS) teachers assess students' oral English performance. The evaluation behaviors of two groups of teachers (12 Canadian NS teachers and 12 Korean NNS teachers) were compared with regard to internal consistency, severity,…

This article reports the results of a research study to determine the washback effect of an oral assessment system on some areas of the teaching and learning of English as a Foreign Language (EFL). The research combined quantitative and qualitative research methods within a comparative study between an experimental group and a comparison group.…

The aim of this study is to explore the possibility of creating positive washback by focusing on factors in the background of the test development process and anticipating the conditions most likely to lead to positive wash-back. The article reports on a multiphase empirical study investigating the washback effects of a needs-based test of spoken…