The Effect of Textual Enhancement Types on EFL Learner's Grammatical Awareness of Simple and Complex Structures

The purpose of this study was to investigate the effect of textual enhancement types on English as Foreign Language ( EFL ) learn er s ’ grammatical awareness of simple and complex structures. A nu m- ber of 104 learners from Ayandegan Institute, in Tehran, participated in this study. To homogenize the samples, the researchers administered a placement Michigan Test of English language to the pa r- ticipants . The participants were then divided into four groups, two experimental groups and t wo co n- trol groups. The two experimental groups went through enhanced forms of the texts containing si m- ple and complex structures, while the two control groups experienced unenhanced forms of the texts containing simple and complex structures. Before and af ter the treatment, a pretest and a posttest were run and the two reading texts with enhanced and unenhanced versions were used. The f indings showed that the textual enhancement had significant effect on learners’ grammatical awareness of simple and complex structures. There was also a significant difference between male and females’ scores in simple and complex structures.