Few studies have examined the effects of extensive reading (ER) on foreign language learners' acquisition of sight vocabulary, especially for partially known high-frequency words and reading fluency development. This study compared groups of non-English-major Japanese university-level students engaged in ER with intensive reading (IR) for two…

While learners can acquire vocabulary through extensive reading (Pigada & Schmitt, 2006), research suggests that acquisition can be more effective when supplemented with targeted vocabulary activities (e.g., Paribakht & Wesche, 1997). Problems arise, however, in determining what vocabulary learners have acquired, and what items should be…