Nafiseh Safari Vesal - Islamic Azad University, Najafabad Branch, Isfahan, Iran
Mansoor Tavakoli - Isfahan University, Isfahan, Iran.
Morvarid Safari Vesal - Islamic Azad University, Tehran Center Branch

This study examined the effect of task type on dimensions of complexity, accuracy and fluency (CAF) in oral production of Iranian EFL candidates in IELTS Speaking test. Forty candidates participated in this study across two groups of intermediate and advance. They were participated in a pretest in order to check their proficiency level. After pretest the main interview conducted. There are three task types in IELTS interview each of which are conducted in a separate part namely: introduction, long monologue, and discussion. During this phase of the study, oral productions were recorded and then transcribed in the next phase in order to find changes in CAF dimensions in the above mentioned tasks. According to the results of the study, task type had a significant effect (p < 0.05) on complexity, accuracy and fluency of oral production of IELTS candidates' speaking test. This study has theoretical and practical implications in testing as well as teaching and learning fields.

Task type, Oral production, Complexity, Accuracy, Fluency