درخت حوزه‌های تخصصی

Acquiring adequate vocabulary in a foreign language is very important but often difficult. Considering the importance of learner’s vocabulary learning and retention, the present study aimed at examining the impact of playing word games on young Iranian EFL learners’ vocabulary learning and retention at Irandoostan language Institute in Tabriz. To that end, 50 female learners at the age range of 8-12 were selected and assigned into an experimental (n=25) and a control (n=25) group. The design of the study was quasi-experimental with pretest, immediate posttest and delayed posttest. The content of the tests were based on the students’ course books and consisted of 20 items. The researcher utilized the word games in order to teach the selected vocabulary items during the course which lasted for a month and a half. The games were played each session for about 15 minutes. The experimental group was engaged in playing word games as a treatment and the control group received usual instruction. After the treatment, the participants in both groups took the post-test and after two weeks the learners were asked to take the test once more. This time their scores were assigned as the retention post-test scores. The mean scores of two groups were compared three times through the independent samples t-test. The results of the data analysis revealed that playing word games were effective in helping learners to improve their vocabulary learning and retention.

The equitable distribution of income is considered as a development indicator in countries. Thus it is required to identify factors impacting the equitable distribution of income to make suitable policies to improve it. The present study aims to determine the optimal inflation rate in order to minimize income inequality by using the dynamic stochastic general equilibrium (DSGE) method in Iran during 1997-2017. The results revealed the optimal inflation rate to be 3.74%. An increase or reduction in the optimal inflation rate of 3.74% enhances income inequality. Thus, the government should target the inflation rate in its policies to achieve minimum inequality. Hence, inequality fluctuations (rises and declines) will be probable.

Objective: This study aimed to examine the effectiveness of the combined Eyberg Parent-Child Interaction Training and personality-centered parenting on internalizing and externalizing problems in children aged 7 to 10 years. Methods: The research method was a quasi-experimental design with a pre-test and post-test control group. The research population included mothers of children aged 7 to 10 years in Tehran with internalizing and externalizing problems. From this population, 30 mothers were selected through convenience sampling and randomly assigned to two equal groups (each group consisting of 15 participants). The experimental group received eight 90-minute online sessions of Eyberg Parent-Child Interaction Training and personality-centered parenting, while the control group received no intervention. For data analysis, first, descriptive information related to the research variables was provided. Findings: After confirming the assumptions for using covariance analysis, the hypothesis test results indicated that the combined intervention package of Eyberg Parent-Child Interaction and personality-centered parenting had an effect on internalizing and externalizing problems (p < .01). Comparison of the effect sizes obtained showed that the intervention package had the most significant impact on four components (aggression, thought problems, somatic complaints, and anxiety/depression) out of a total of eight behavioral problem components (p < .01). The effect size (eta coefficient) demonstrates the intervention's impact on the dependent variables. Comparison of the effect sizes showed that the intervention package had the greatest impact on anxiety/depression with an eta coefficient of 0.511, followed by thought problems with an eta coefficient of 0.443, aggression with an eta coefficient of 0.385, and somatic complaints with an eta coefficient of 0.351. Conclusion: The findings indicated that parental training led to a reduction in children's internalizing and externalizing problems. The results suggest that prioritizing and examining parenting styles should be considered the first line of treatment, as children learn how to interact with others within the family, and family experiences serve as models for their future social relationships.