عباس بیاتی

The present study was an attempt to explore the ‘washback effect’ of task-based assessment (TBLA) on EFL Iranian learners’ pragmatic development. To this end, through conducting KET (Key English Test), 60 out of 120 EFL Iranian learners studying in an English language school, were randomly selected. They were assigned to treatment group (N=30), and control group (N=30). The treatment group was assessed through TBLA and the control group was assessed via non-task based assessment for 20 ninety-minute sessions. The class sessions were held twice a week. The obtained data was examined through independent sample t-test. The findings implied that TBLA as a pedagogical measurement tool can well replace the classic assessment procedures, since all educational efforts including testing and assessment procedures are planned to maximize the educational gains and developments.

Processability Theory (PT) is regarded as one of the prominent theory of second language acquisition (SLA) developed to illuminate the developmental sequences in SLA as well as some other linguistic phenomena (Pienemann, 1998a; 2011).Since 1990s, Processability has been at the center of attention in second language acquisition research. Within the framework of Processability theory and through analyzing the written performance of Iranian EFL learners, the present research focused on the acquisition of “Copula inversion” and “Negation” across five proficiency levels, from elementary to advanced and compared it with the stage-like development model of morpho-syntactic structures proposed by Pienemann (1998a, 2011). The study followed a descriptive method of research and the data was collected from 350 participants in five different proficiency levels from elementary, pre-intermediate, intermediate, upper-intermediate and advanced. The participants were asked to provide samples of their written performance on different tasks such as introduction task, habitual action task, story retelling task, audio-video-retelling task, picture description task, composition, communication task. The data in this research was analyzed both qualitatively, in order to identify and classify the type and order of the morpho-syntactic structures; and quantitatively, by calculating means. The results of Kruskal-Wallis test revealed that “Negation” emerged at the elementary level of the language learners’ performance and “copula inversion” emerged at the intermediate level. Just the same, the competence of the learner grows stronger in concern with these variables through the higher proficiency levels. These findings imply that PT is valid for Iranian EFL learners, as well.