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Local independence of test items is an assumption in all Item Response Theory (IRT) models. That is, the items in a test should not be related to each other. Sharing a common passage, which is prevalent in reading comprehension tests, cloze tests and C-Tests, can be a potential source of local item dependence (LID). It is argued in the literature that LID results in biased parameter estimation and affects the unidimensionality of the test. In this study the effects of the violation of the local independence assumption on the person measures in a C-Test are studied. A C-Test battery comprising four passages, each containing 25 blanks, was analysed twice. Firstly, each gap was treated as an independent item and Rasch’s (1960) dichotomous model was employed. In the second analysis, each passage was treated as a super item and Andrich’s (1978) rating scale model was used. For each person, two ability measures were estimated, one on the basis of the dichotomous analysis and one on the basis of the polytomous analysis. The differences between the two measures, after being brought onto the same scale, are compared and the implications are discussed.

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Due to deficiencies of the traditional models of standard setting, this study intends to suggest a new method for setting standards employing Rasch measurement. Precise and efficient methods for setting performance standards and linking tests to ability scales is a much-felt need in today's educational contexts. The introduction of the Common European Framework of Reference as a common paradigm for language teaching and assessment stressed the need for such methods. The suggested method combines the classic test-centered method of standard setting with the probabilistic properties of the Rasch model to set several cut points on the ability continuum. The Wright map which jointly depicts the difficulty location of items and the ability location of persons on a common scale is the cornerstone of this method.  

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This study has as its main concern focusing on the assorted ways Iranian language learners view their language educational system and the impact of these views on their success in learning a foreign language.  For the qualitative aim of this study, metaphors being stated by the learners were collected by some unfinished sentences which learners were required to complete to demonstrate their beliefs about their teachers, the teaching process and how they view themselves as learners. Then, the analysis and categorization of these metaphors based on Martinez (2001) taxonomy of metaphors revealed the kinds of learning principles which seem to be more favourable to learners than others. Results of the analysis of the metaphors showed that the public school learners mostly attribute their level of failure in language learning to the ‘behaviouristic’ methods in their classes while the private school learners attribute their apparent success to the ‘cognitive’ style of learning. Finally, the results were discussed in the context of second language acquisition. 

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The main purpose of this study was to construct and validate a Computerized version of Dynamic Assessment (C-DA) and examine its effectiveness in enhancing reading comprehension. Feasibility and concern for psychometric properties of testing are issues that have limited the use of DA approaches. In this study, C-DA is offered as a solution for overcoming such limitations. To this end, a software package named Computerized Dynamic Reading Test (CDRT) was developed. The software is capable of providing test takers with strategy-based hints. For each test taker, two scores are assigned by the software a non-dynamic score which is based on test takers' first try of each item and a dynamic score which is based on the average hints they have employed. One hundred and four university students took the test. The findings of the study indicated that while observing the psychometric standards of testing namely, reliability and validity, C-DA was useful both in improving students' reading comprehension ability and in obtaining information about their potentiality for learning which goes beyond and over the initial performance level. While some test takers made the best use of the hints and could enhance their comprehension of the text, others could not use them to their advantage. The Information obtained from DA enables teachers to provide students with more individualized and consequently more effective instruction. 

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         This study was conducted to find out to what factors Iranian EFL language learners at high schools attribute their successes and failures. To this end, 708 Iranian high school students from different socioeconomic backgrounds and gender were selected. These participants were asked to take an attribution questionnaire. The questionnaire consists of four parts: Emotion, Self-image, Intrinsic motivation, and Language policy. Mainly, ANOVA and Post-hoc tests were employed to analyze the data. The results demonstrated that Intrinsic motivation is the primary attribution, and gender does not play any role in attribution. Moreover, significant differences were found among students of different social classes. Students from high socioeconomic background scored highest in Emotion and Self-image and students from rural areas outscored in Intrinsic motivation and Language policy. Finally, the results were discussed in the context of language learning and teaching.

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The major aim of the study was to determine the roles of psychological and sociological factors in general and social/cultural capital and cognitive/metacognitive aspects in particular in English language learning. To this end, 143 English as a Foreign Language (EFL) learners were asked to take an IQ test, a metacognitive questionnaire along with a social and cultural capital scale. Structure Equation Modeling (SEM) was utilized to analyze the data. The results demonstrated that both psychological and sociological factors contribute to foreign language achievement, however social and cultural capital was found to be more influential in English language learning. In the end, the results were discussed in the context of English language learning and some suggestions were made. 

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