Elnaz Shoari - MA, University of Tabriz, Aras International Campus, Iran
Farahman Farrokhi - Associate Professor, Tabriz University, Iran

This study aimed at investigating the effect of graphic organizer strategy onimproving Iranian EFL learners’ vocabulary learning. Fifty students participatedin this study which lasted for one academic semester. The students were dividedinto two groups: one experimental group in which students were taught newvocabulary items through graphic organizers in form of clusters and pictures, andone control group whose students were taught the same items through traditionalinstruction. At the beginning of the program, the researchers conductedCambridge Mover Tests in order to assure the homogeneity of the students’proficiency level. A pretest was subsequently administered on learners’vocabulary knowledge. Then the intervention commenced. At the end of thesessions, one posttest was conducted for measuring effectiveness of the treatment.Then the researchers analyzed the gathered data. Because there were two groupsin this study, the researcher used t-test for analysis, paired t-test for comparing theresults within groups, and independent t-test for comparing the results betweengroups. The results showed that graphic organizers were indeed conducive to L2vocabulary learning by the learners.

Graphic Organizer Strategy; Vocabulary Learning; Clustering