---

The present study was conducted to investigate the effect of computer-mediated interaction and face-to-face oral interaction on the recognition and production of vocabulary by Iranian learners of English. To this end, 128 male and female high and low proficiency level learners of English participated in the study. Recognition and production of target words were assessed by receptive and productive, oral and written measures. Four independent two-way ANOVA procedures were used to analyse the data. Results showed that the computer-mediated interaction group at both levels (advanced & elementary) outperformed the face-to-face oral interaction group on both written and oral vocabulary recognition and production tests.  It also turned out that although the low-proficiency level learners' written vocabulary recognition was affected by computer-mediated interaction more than that of the high-proficiency level learners, the latter experienced greater gains in written vocabulary production. The findings show that Computer-mediated interaction can be advantageous to vocabulary teaching and learning. 

---

This study was intended to compare processing instruction (PI), an input-based approach to L2 grammar instruction developed by VanPatten (1996), with an output-oriented type of instruction (OI) to assess their relative effects on learners' ability to interpret and produce English causatives. A pretest and posttest (immediate and delayed effects) design was used. 151 university students from four intact classes were randomly assigned to three treatment groups of PI, OI, and EI (Explicit-information-only) and one uninstructed control group (C). Students were assessed on interpretation and controlled written production tasks at the sentence level. Within-group comparisons indicated that the three instructional options, as compared to the control group, resulted in some kind of knowledge gain in both interpretation and production tasks, but the gains were not equal. The results of between-group comparisons contradicted VanPatten's claims about the superiority of PI over OI. While PI and OI were equally better than EI on interpretation tasks, OI group outperformed both PI and EI on production tasks. No significant difference was found between PI and EI on production tasks. The same results were obtained after a one-month interval, reflecting the durability of the instructional effects on the interpretation and production of the target structure.

---

To investigate the effect of different patterns of lexical collocations on the recognition and production of Iranian upper-intermediate learners of English, 34 participants at Imam Khomeini International University (IKIU) in Qazvin were presented with receptive and productive tests of English collocations. To compare the participants' recognition of various patterns of lexical collocations, a one-way ANOVA procedure was used. Results indicated that the participants performed relatively better on 'adjective + noun' and 'noun + noun' patterns of lexical collocations, although the differences among the scores of the participants on the different patterns were not statistically significant. Another one-way ANOVA procedure was used to compare the participants' production of the same patterns. Analysis showed that of the seven patterns of lexical collocations investigated, the participants' performance on the 'noun + verb' pattern was significantly poorer than the other patterns. 

---

The aim of the present study was to investigate the effect of task-based language teaching (TBLT) on EFL learners’ pragmatic production, metapragmatic awareness, and pragmatic self-assessment. To this end, 75 homogeneous intermediate EFL learners were randomly assigned to three groups: two experimental groups and one control group. The 27 participants in the pre-task, post-task pragmatic focus group (experimental group one) received pragmatic focus on five speech acts in pre-task and the post-task phases. The 26 participants in the scaffolded while-task group (experimental group two) only received pragmalinguistic and sociopragmatic feedback and scaffolding during task completion. However, the 22 participants in the mainstream task-based group (control group) were not provided with any sort of pragmatic focus. The EFL learners’ pragmatic production, metapragmatic awareness, and pragmatic self-assessment were measured using a written discourse completion task (WDCT), a metapragmatic awareness questionnaire, and a pragmatic self-assessment questionnaire. The findings showed that the three groups enhanced their pragmatic production to almost the same degree at the end of the treatment. Furthermore, the results revealed the development of metapragmatic awareness among the EFL learners in the two experimental groups only. In addition, the two experimental groups managed to develop their pragmatic self-assessment more than the control group. Therefore, it can be concluded that the use of tasks within the framework of TBLT, with or without pragmatic focus in any of the three phases, helps EFL learners develop pragmatic production, while the development of metapragmatic awareness and pragmatic self-assessment can be attributed to pragmatic focus and feedback.

---

This study focused on the pedagogical application of priming in an EFL context. Structural priming refers to the speakers’ tendency to produce the structure they encountered in recent discourse in subsequent production compared to an alternative form. Given the limited number of studies in the literature with a focus on the application of priming in L2 teaching and the problems that L2 learners face during speech production, the present study aimed at investigating whether the implication of priming leads to a more frequent oral and written production of the relative clause (RC) structure compared to adjectival modification of nouns (AN) in long- and short-terms as an instance of implicit learning. Participants consisted of 60 EFL female L2 learners, aged between 18-25 years old. Two experimental and 1 control groups were defined and 20 participants were allocated to each group. By applying a pretest, a treatment, an immediate posttest, a delayed posttest design, a picture description task, and a grammaticality judgment test (GJT), the data were gathered. Results of the descriptive and inferential analyses revealed that the implication of priming led to an improvement in the rate of the RC construction when the participants were involved in the written production of the L2, as compared to oral modality. Results are discussed based on structural complexity and procedures involved in L2 production. Theoretical and practical implications of the study are considered, too.