This study examined the empirical differences between the tendency to omit items and reading ability by applying tree-based item response (IRTree) models to the Japanese data of the Programme for International Student Assessment (PISA) held in 2009. For this purpose, existing IRTree models were expanded to contain predictors and to handle…

Vocabulary is an essential component of language. It is central to reading ability, writing ability and listening ability, and the most important aspect of second-language (L2) knowledge for academic achievement. The aim of this paper is to investigate quantitatively some of the factors that make some L2 words more difficult to learn and retain…

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…