This study investigated the effects of processing three types of texts, namely expository texts, narrative texts, and a combination of both known as twin texts, on incidental vocabulary acquisition and retention in L2 learners. College freshmen (N = 109), who were lower to upper intermediate learners of English, were assigned into a control group…

While hierarchical machine learning approaches have been used to classify texts into different content areas, this approach has, to our knowledge, not been used in the automated assessment of text difficulty. This study compared the accuracy of four classification machine learning approaches (flat, one-vs-one, one-vs-all, and hierarchical) using…

This 4-year longitudinal study examined the extent to which morphological awareness, syntactic processing, working memory (WM) and reading skills predict unique variances developmentally in three genres of Chinese writing (narration, argumentation and exposition) among 246 young Mandarin-speaking children. Hierarchical regression analyses were…

Two groups of 12-year-old ethnic minority (EM) users of alphasyllabary (66 Tibetan and 45 Yi) were compared with 42 Han Chinese students in comprehending Chinese narrative and expository texts, each with inferential questions requiring short open-ended written answers. Three constructs (verbal working memory, orthographic and sentential…

The present studies test 2 hypotheses: (1) that pedagogical contexts especially convey generic information (Csibra & Gergely, 2009) and (2) that young children are sensitive to this aspect of pedagogy. We examined generic language (e.g., "'Elephants' live in Africa") in 3 studies, focusing on informational versus narrative children's…

School success in the 21st century requires proficiency with expository discourse--the use and understanding of informative language in spoken and written modalities. This occurs, for example, when high school students read their textbooks and listen to their teachers' lectures, and later are asked to demonstrate their knowledge of this complex…

In this study we argue that narrative storytelling and expository discussion, as 2 distinct discourse genres, differ both in linguistic expression and in their underlying principles of organization--schema-based in narratives and category-based in exposition. Innovative analyses applied to 160 personal-experience narratives and expository essays…