The Comprehension Hypothesis (CH) is the most powerful hypothesis in the field of Second Language Acquisition despite the presence of the rivals the skill-building hypothesis, the output hypothesis, and the interaction hypothesis. The competing hypotheses state that consciously learned linguistic knowledge is a necessary step for the development…

This study investigated which level of graded reader was most appropriate for Chinese-speaking learners of various English abilities and whether there were significant differences in comprehension and vocabulary acquisition when different English proficiency (EP) groups read texts of varying difficulty levels. Eight-two senior high school students…