درخت حوزه‌های تخصصی

There is substantial debate over the mental representation of regular past tense forms in both first language (L1) and second language (L2) processing. Specifically, the controversy revolves around the nature of morphologically complex forms such as the past tense –ed in English and how morphological structures of such forms are represented in the mental lexicon. This study focuses on the results of a speeded acceptability judgment task testing English regular past tense forms of high- and low frequencies. In this task, participants judged the acceptability of sentences as quickly and accurately as possible. Thirty-two intermediate-to-advanced L1 Persian and L1 Arabic speakers (L2ers) and twenty-two Native speakers (NSs) of English made acceptability judgments for regular past tense forms of high- and low-frequency verbs in sentential contexts. Considering participants’ reaction times (RTs) and accuracy rates as the dependent variables, the main results are as follows. Despite NSs’ faster RTs and higher accuracy scores, both groups demonstrated the same pattern of accuracy rates and RTs. Specifically, for accuracy data, regular verbs yielded a reverse frequency effect or anti-frequency effect in both groups (i.e., lower accuracy rates for high- than low-frequency regular forms in NSs as well as L2ers). For RT data, while the NSs exhibited a marginally anti-frequency effect, the L2ers displayed a nonsignificant trend for the anti-frequency effect. These results support the dual-mechanism models suggesting that the mental mechanisms and representations of inflectional morphology are the same in NSs and intermediate-to-advanced L2ers.

Perpose: The aim of this study was to design a model of professional competence of principals based on the development of creativity and innovation in primary schools. Methodology: The method of the present study was a combination of exploratory type in which the qualitative method was performed using the underlying theory and the quantitative method was performed using the structural equation model. The statistical population of the study was in the quantitative part of all primary school principals in Tehran in the academic year 2019-20 and in the qualitative part of all experts in the field of education in Tehran. Sampling in the quantitative part using stratified stratified sampling method 196 managers of 22 districts of Tehran were selected and in the qualitative part 17 people were selected using purposive sampling with emphasis on the principle of theoretical saturation. The research tools in the qualitative part were in-depth semi-structured interviews with 5 questions and in the quantitative part of the researcher-made questionnaire to assess the components of manager’s professional competence. Since the content of the questionnaire shows the components that have the highest coefficient of importance, according to the approval of the questions by experts, the validity of the content of the questionnaire has been confirmed. The total alpha coefficient of the design questionnaire identifying the pattern of professional competence of principals based on the development of creativity and innovation in primary schools is 0.937 or 94% that the tool used has a good reliability. Data were collected in the qualitative section by grounded theory method and then analyzed by testing structural equation modeling using Smart PLS software. Findings: The results of exploratory and confirmatory factor analysis showed that the components of motivation, management, technology, attitude-behavioral, cognitive-skill components and indicators of professional competence of principals are based on the development of creativity and innovation in primary schools. Also, the model fit indices that were performed using the structural equation model showed that the research data had a suitable fit with the model of professional competence of principals based on the development of creativity and innovation in primary schools. Conclusion: Based on the results of the research, attracting and employing competent managers, especially in the critical elementary school, requires the creation of a human resources system in which meritocracy prevails.

 Todays, cities have become one of the mos t complicated sys tems, which may become fragile when not managed appropriately. In order to prevent fragility, cities should respond more quickly and effectively to complicated threats, which requires an accurate unders tanding of the concept of fragility. In this regard, a sys tematic review was conducted based on Preferred Reporting Items for Sys tematic Reviews and Meta-Analyses (PRISMA) to unders tand the concept of urban fragility by electronic search using keywords combined with Boolean OR and AND operators in Google Scholar, ISI Web of Science, and Scopus. Based on the reviewed articles, the dimensions of urban fragility, including the economic, social, governmental, environmental, international relations, and economic, social, and political conditions of individuals, were identified for each component and indicator. Given the definition of fragility and its dimensions, the present s tudy can provide an opportunity for identifying the causes of fragility in cities and providing some solutions.

Purpose: Considering rich theoretical underpinnings of positive psychology (PP), the current study aimed to investigate the effects of an extra educational curriculum on the basis of PP on distress and attainment of Iranian high school students who are living in dormitories in boarding schools. Methodology: This is an empirical study with a post-test only control group design in which a sample of 346 male students were selected through convenience sampling from two boarding schools in Qom city during 2018-2019. A translated and validated version of K10 distress questionnaire (Kessler et al, 2010) was administered to them and 67 students with high distress symptoms were identified and randomly allocated to a control group (N=23), experimental group one (N= 22) and experimental group two (N=22). First, the experimental group underwent 16 sessions (twice a week for 90 minutes) of PP curriculum integrated with religious counseling. Employing a post-test only control-group design, the group’s performance on a distress scale (Goldberg, 1981) and their mean scores were compared after the intervention. Kruskal-Wallis and ANOVA tests were used to compare differences between the groups. Findings: Findings revealed that positive curriculum alleviated distress symptoms of the experimental groups vis-à-vis the control (χ2 (2) = 52.851, p ≤ 0.001). Also, to investigate the effect of the intervention on educational attainment, their semester mean scores were analyzed through ANOVA (F = 8.244(2, 66), p≤0.001) where promising results were obtained. Conclusion: It was concluded that both interventions exerted meaningful effects on the attainment and distress of dorm-living students. Also, follow-up studies added proof on the permanence of the effects.

Economic punishments and sanctions have been used against the Islamic Revolution of Iran as well as some other countries. But their efficacy is usually in dispute among politicians and economists. Current research reports the results of a randomized experiment that seeks to identify the cause of the failure of broad political punishments and sanctions. Most sanctions and political punishments are ultimately employed as a psychological-economic device. They are meant to adversely affect the opinion of the people of a country, thereby putting pressure on the government to change course. We propose and empirically test the hypothesis that a reduction of welfare has a different effect when it is attributed to an out-group versus an in-group agent. We find that when economic failure is believed to have been brought about by an outsider, it actually solidifies the position of the leader. There is, moreover, no statistically significant difference in the reactions across sexes. The study draws on insights from the sociology of group identity to propose an answer to an old question in political economy. There is, moreover, no statistically significant difference in the reactions across sexes. The study draws on insights from the sociology of group identity to propose an answer to an old question in political economy.