Multiple imputation (MI) inference handles missing data by imputing the values $m$ times, and then combining results from complete-data analyses. However, existing method for likelihood ratio tests (LRTs) has multiple defects: (i) combined test statistic can be negative, but its null distribution is approximated an $F$-distribution; (ii) it not invariant to re-parametrization; (iii) fails ensur...

multiple-choice tests are the most common type of tests used to evaluate medical education.  these tests have long been used in the written format for specialized boards and residency promotion tests in iran and kermanshah university of medical sciences (kums), as well (1). multiple-choice tests are being analyzed using quanti­tative method (test level, difficulty level and discrim­ination leve...

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It is very likely that, at least once in their lifetime, everyone has answered a multiplechoice test. Multiple-choice tests are considered an effective technique for knowledge assessment, requiring a short response time and with the possibility of covering a broad set of topics. Nevertheless, when it comes to their creation, it can be a time-consuming and labour-intensive task. Here, the genera...

Objective: Many studies have suggested that there is a relationship between coherence and cognitive processes. This study aims at investigating this hypothesis through assessing the relationship between cognitive variables and coherence in the discourse of two groups of Persian-speaking younger and older adults. Methods: In order to evaluate our participants' cognitive capabilities, we recrui...

This paper examines the effect of gender and type of stem on Iranian test takers’ performance on the grammar section of a nation-wide language proficiency test. In so doing, the scores of 2931 examinees (1107 female and 1824 male) who sat Tarbiat Modares English proficiency test were obtained. The examinees’ scores on three types of MC grammar items with different kinds of stems (i.e., blank fi...