Metadiscourse is a construct that is increasingly important in both co
mposition and reading research. The purpose of this study was to explo
re, first, how metadiscourse can enhance the writer's awareness of rea
ders' needs and, second, how the use of metadiscourse is related to th
e quality of the texts that students produce. In this quasi-experiment
al study, university-level student writers in the experimental class w
ere taught metadiscourse in addition to a process method, while those
writers in the control class were taught composition through only a pr
ocess method. Pre- and post-treatment student papers were analyzed to
determine whether metadiscourse usage was different and how the interp
ersonal, textual, and ideational components of the texts in the two gr
oups were affected. The results of the analysis indicated that the exp
erimental group benefited from instruction about metadiscourse: Studen
ts in the experimental group produced essays that received significant
ly higher grades than those in the control group. Qualitative in-depth
analyses of the essays of the experimental students further showed th
at this improvement can be attributed to the use of metadiscourse mark
ers, which made the texts move accommodating toward readers, and to th
e strengthening of the ideational as well as the interpersonal and tex
tual meanings of the texts. These results suggest that teaching studen
ts to use metadiscourse may be an important way to improve their writi
ng skills.