فریبرز درتاج

Purpose: This study investigated the relationship between gender and bilingualism with English learning among 7-11 years old students. Methodology: 261 students (124 girls and 157 boys) were selected through multi-stage sampling method from elementary school. Employing check list the level of English scores was obtained .The children's private speech obtained from listening to them when they were solving a puzzle in group. Findings: An independent t test showed that there was no significant relationship between bilingualism and English scores (p<05/0). Furthermore an ANOVA test indicated that there was a significant relationship between the type of private speech and English scores (p<0/01). A Sheffe post hoc showed that the solving private speech had the significant relationship with high performance in English scores among four types of private speech: Solving speech, Task relevant speech, non- facilitative Coping/ reinforcing speech and task- irrelevant speech. Discussion: considering the nature of the "solving private speech" indicates that this kind of private speech had a more meta-cognitive nature which leads to better cognitive function such as learning English.

Purpose: The aim of present study is investigation the role of family functioning and generation gap in the relationship between parental controls style and addiction to social networks. Methodology: The present study is a descriptive one. Theoretical bases of the study were collected by reputable sites, books and related articles. The information and data for hypothesis testing were gathered by standard and a researcher-made questionnaire. Statistical society was all of male and female student of the second year of high schools in district 5 of Tehran (140 persons). After data collection, data analysis was performed using SPSS and PLS. In this study, Validity and reliability of the questionnaire was approved. Validity of the questionnaire was accepted by expert opinion of university and reliability of that was calculated by Cronbach's alpha and the value of that was 0.82. Findings: Results showed that family functioning and generation gap have significant roles in the relationship between parental controls style and addiction to social networks. Discussion: Therefore, it can be concluded that by improving family functioning and reducing the generation gap, better control of addiction to social networks can be created.

The aim of the current research is to explore a strategist developing model based on a mixed method for National Iranian Oil Company. This study is an exploratory and applied research, and it methodologically uses mixed methods. In the qualitative part, which is based on a data theory approach, the required data were gathered by means of semi-structured interviews. The participants involved in the study were 24 industrial and academic experts. After collecting the data, they were encoded, and necessary measurements were then taken to determine dimensions, main categories, subcategories, and relevant concepts related to our coding system. Having gained a coded table which was pivot and selective, finally, the goodness of the fit of the paradigmatic research model was developed (n=320). Quantitative analyses were performed by means of SPSS 24 and Lisrel 9.30 software. The qualitative findings of this study included 11 main categories, 24 subcategories, and 98 concepts. The concepts which were related to development strategists included causative factors (individual factors, organizational factors, and discourses); the category of central strategic thinking (conceptual and organizational thinking, foresight, and philosophical attitudes); obstructive factors (both inter organizational and intra organizational factors); contextual factors (cultural context, psychological factors, and organizational independence); strategies to identify the talents, to attract them, and to retain them; the outcomes of the establishment of monitoring system; strategic thinking; and the process of developing experts in our oil company. Our findings resulted in discovering a pattern to develop experts in oil industry.  

Purpose: Extreme dependence on virtual social networks has devastating consequences such as academic underachievement, sleep disorder, and social isolation, clearly highlighting the need for research in this area. The purpose of this study was to investigate the effect of rumination, social support, loneliness and social anxiety on dependence on virtual social networks with an emphasis on the mediating role of self-regulation. Methodology: The statistical population included all female upper secondary school students in Tehran who studied in the academic year of 2017-18. Six hundred (600) students were selected by multistage random cluster sampling. Research data was analyzed using structural equation modeling. Findings: The results indicated that the model had a good fit. Also the direct and indirect effects of social anxiety and social support, as well as the direct impact of loneliness on the dependence on virtual social networks, are rejected at the alpha level of 0/05 and are not significant. Discussion: Rumination and self-regulation variables were significant in direct effect. Rumination and loneliness variables were also significantly correlated with self-regulation mediation in indirect effect.