Abstract: :A person’s metacomprehension monitoring accuracy is operationalized as the intra-individual correlation between a person’s comprehension ratings and his or her test performance, the metacomprehension accuracy and its effect are key issues in the study of metacomprehension and become one of the most intensely investigated of the metacognitive judgments. In this paper, we started with a review on the study of the methodolody for research on metacomprehension judgment and its accuracy. Then, the delayed-keyword effect of metacomprehension monitoring and its mechanism were introduced and discussed. Finally, the limitations of previous studies and some suggestions and new directions were proposed on the research of metacomprehension monitoring accuracy

Key words: metacomprehension monitoring, accuracy, delayed-keyword effect