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Reflective practice can greatly improve teachers' professional development, and various studies have demonstrated that teachers' knowledge sharing has a positive impact on their reflection. Accordingly, the present study was conducted to examine the effect of knowledge sharing in a popular online forum – WhatsApp – on English as foreign language (EFL) teachers' reflective practice. It was also aimed to probe the challenges the teachers faced to share information in their daily practice.

The experimental study was pretest and posttest. To do so, 60 available EFL teachers were chosen as the participants. They were randomly assigned to experimental and control groups. Both groups received the English language teaching (ELT) reflection inventory as the pretest and posttest. In addition, to find the difficulties EFL teachers encounter to share information in their daily practice, a week after the treatment, a semi-structured interview with 21 volunteer EFL teachers from the experimental group was carried out. As the treatment, the online discussion among the teachers regarding their daily practice took around 1 h and lasted two weeks.

The result of the posttest revealed that the experimental group outperformed the control group in their reflective practice. The results of the interview revealed that among other factors, the EFL teachers' lack of awareness regarding the importance of knowledge sharing, sticking to conventional methods of teaching and considering authorities' views as more trustworthy were the barriers which impede their knowledge sharing.

The findings could inspire reconsideration of the role social media plays in Iranian EFL teacher education and its role in contributing to teachers' professional development as well as their social interaction with colleagues. The results also call for taking measures to eliminate barriers to EFL teachers' knowledge sharing, which are partly rooted in the socio-educational context.

Some studies have argued that knowledge sharing may contribute to the promotion of EFL teachers' reflectivity. There are also studies that have reported that teachers' involvement in sharing of knowledge does not have a significant effect on their reflective practice. Accordingly, contradictory results have been reported regarding the effectiveness of knowledge sharing in promoting teachers' reflection. In addition, exploring the impact of knowledge sharing on EFL teachers' reflectivity via WhatsApp deserves more attention.

As demonstrated in the literature, teachers’ knowledge sharing, self-efficacy and creativity display certain levels of cause-and-effect and correlational connections from different perspectives. Nonetheless, few studies, if any, have been reported on the interplay of these three concepts in the context of the language classroom. As such, this study aims to test a structural model of English as a foreign language (EFL) teachers’ knowledge sharing, self-efficacy and creativity and specifically to examine the hypothesis that creativity mediates the relationship between EFL teachers’ knowledge sharing and self-efficacy.

The participants were 384 EFL teachers from different language institutes across Iran. The EFL teachers were selected based on random stratified sampling method. To verify the research hypotheses, a quantitative correlational design was used in the present study. The quantitative data was collected using three questionnaires, and then descriptive and inferential statistics were used to analyze the data. Therefore, we used the EFL teachers’ creativity questionnaire developed by Khany and Boghayeri (2014), knowledge sharing behavior scale by Ramayah et al. (2014) and teachers’ self-efficacy questionnaire by Tschannen-Moran and Hoy (2001). To analyze the data, Pearson correlation and multiple regression were run.

The findings revealed the hypothesized model of relationships among the study variables. The results also confirmed the mediator role of creativity. The implications of the findings in relation to creativity, knowledge sharing and self-efficacy are discussed.

The bulk of research on teacher self-efficacy has concentrated fairly adequately on its relationship with factors such as teachers’ reflective practice, critical thinking, emotional intelligence, personality and student achievement. What seems to be rather missing in this line of research has to do with the exploration of the possible links among knowledge sharing, self-efficacy and creativity as interacting variables, especially in the context of Iran where teachers’ knowledge sharing is lower than expected. More importantly, no previous investigation has tapped into the mediating effect of creativity on the connection between English teachers’ knowledge sharing and self-efficacy.

The present study aimed to investigate the impact of social networks on the use of academic libraries by university students.

The method used in the present study was a survey. The statistical population included 461 university students. The data collection tool was a questionnaire. The result of the Cronbach test was equal to 0.726 indicating the acceptable reliability of the questionnaire. For data analysis, descriptive statistical methods and inferential statistical methods using SPSS 21 software were employed.

The findings showed that 243 of the participants used social networks for 4–6 h a day, 192 students never used university libraries and 229 used the university library only once in a month. Communication with friends was also reported to be one of the main goals in using social networks. The results of regression analysis also indicated that four predictor variables including information retrieval, social influence, trust and attractiveness of social networking environment were statistically able to explain the variance of reluctance to use university libraries.

The present study is one of the few studies that has examined the negative impact of social networks on visiting university libraries.