Jung, Mie Ae. 2007. A Knowledge-Based Cognitive Model of Text Comprehension. English Language and Linguistics 24, 71-99. English Language and Linguistics This paper selectively reviews major cognitive models of reading comprehension and shows that a knowledge-based cognitive model can be used as a reading comprehension and instruction model. This paper suggests that the conceptual graphs model which has been proposed as a mechanism for a natural language processing can work as a cognitive-based language learning software tool to help the reader to better understand texts and to develop cognitive and metacognitive reading strategies.