درخت حوزه‌های تخصصی

Long’s Interactional Input Hypothesis and Smith’s Input Enhancement Hypothesis hold both foci on Zellig Harris's (1976) formalist approach. Accordingly, the pivotal role of learner’s attention as one of the subcomponents of focus-on-form approach may have confused instruction types. However, whether such learning theories on drawing learners' attention on target language forms suit all types of learners, has not been adequately investigated. Of interest were to explore the significant effect of the two input types as interactionally modified input (IM) and textual input enhancement (TIE) and the interactional effect of learning styles of either visual, auditory, or kinesthetic (VAK) style on knowledge gain of causative constructions. A hundred and twenty female subjects were selected as a homogenous sample out of the 300-member population based on the TOEFL test. A pretest and two posttests were conducted immediately and about one month after the instructional interventions based on either IM technique or TIE technique. To address research questions, two paired samples t-tests and a two-way ANOVA were conducted. Considering the learner’s VAK learning style, the results revealed TIE and IM techniques positively facilitated the development of knowledge of the target features immediately after the instructional interventions. The results, however, failed to indicate the merging effect of the two input types of the study with the leaner’s VAK learning style and the learner’s gain of target grammar knowledge marginally decreased over time. The findings may contribute to the understanding of the integration of learning styles and input-based instructional programs in foreign language education policy.

Togetherness of English for Specific Purposes (ESP) and Task-Based Language Teaching (TBLT) has been the subject of many recent studies in English as a Foreign Language (EFL) and English as a Second Language (ESL) domain. Few studies, however, have addressed the impact of TBLT on ESP learners’ linguistic production. This study aimed at investigating the impact of task-based teaching on ESP learners’ speaking and writing. Furthermore, this study aimed to explore the ESP learners’ and instructors’ attitudes toward the nature of program and their perceived needs of tasks to be accomplished in the course. To fulfill this aim, 60 ESP students majoring in Law in 2 different classes at Allameh Tabataba’i University, Iran, and 10 ESP instructors were selected as the participants of the study. Accordingly, the students in one of the two classes received a one-semester long instruction based on the principles of TBLT as the experimental group, while the students in the other class were taught according to the content of the textbook developed for such courses. After the instruction was over, the students were given a set of standardized and teacher-made tests. The results of the data analysis indicated that the experimental group showed a significant difference in terms of improvement in acquiring productive skills. It was also revealed that there were significant differences between the participants’ attitudes regarding the nature of the course and their perceived needs of tasks. The findings of this research could provide an insight into designing opportune syllabi for ESP courses.