Aka (2019) conducted an year-long large-scale study demonstrating that Japanese high school students who undertook extensive reading performed better than a control group who undertook grammatical instruction. Those showing the greatest gains were those of lower and intermediate proficiency. The students' achievement was measured in terms of…

Thomas Cobb's 2007 applied linguistics paper, "Computing the Vocabulary Demands of L2 Reading" dealt with whether reading alone can build an adequate reading lexicon in a second language, or whether some sort of extra vocabulary training will normally be required. In the article, Cobb proposed that in the case of adult academic ESL…

Intermediate learners of Spanish read a Spanish newspaper article with vocabulary assistance either before reading, while reading, both, or without any such assistance. Reading performance was significantly better for students receiving vocabulary assistance during reading, but not for those receiving it before reading. Reading time of the…

A word frequency study of two graded readers and an unsimplified text indicated that graded readers facilitated better foreign-language reading and vocabulary learning than did unsimplified texts. It was found that students needed to read several same-level texts to master vocabulary, and that vocabulary mastery was not necessary for successful…