نتایج جستجو برای: Item Discrimination
تعداد نتایج: 115638 فیلتر نتایج به سال:
there are two major theories of measurement in psychometrics: classical test theory (ctt) and item-response theory (irt). despite its widespread and long use, ctt has a number of shortcomings, which make it problematic to be used for practical and theoretical purposes. irt tries to solve these shortcomings, and provide better and more dependable answers. one of the applications of irt is the as...
this study investigated the utility of all of the above (aota) as a test option in multiple-choice items. it aimed at estimating item fit, item difficulty, item discrimination, and guess factor of such a choice. five reading passages of the key english test (ket, 2010) were adapted. the test was reconstructed in 2 parallel forms: test 1 did not include the abovementioned alternative, whereas te...
Introduction: Despite the widespread use of pre-internship comprehensive test and its importance in medical students’ assessment, there is a paucity of the studies that can provide a systematic psychometric analysis of the items of this test. Thus, the present study sought to assess March 2011 pre-internship test using classical and latent trait models and compare their results. Methods: In th...
Prior research has yielded mixed results regarding what contributes to psychometrically sound multiple-choice (MC) items. The purpose of the present study was, therefore, twofold: (a) to compare 3-, 4-, and 5-option multiple-choice (MC) tests in terms of psychometric characteristics, and (b) to investigate the relationships between three MC tests and five personality traits. To that end, 150 st...
Background: At most of the medical universities, MCQ-based examinations are often use as the first component, particularly to ensure the candidates have an adequate knowledge base, prior to entering subsequent clinical examinations. Method: In ICM , 3973 MCQs were collected from tests over a four-year period from 2005 to2009. Questions were evaluated for 10 frequently occurring item writing f...
OBJECTIVES Examine whether three measures of perceived racial discrimination in health care detect similar rates of discrimination and show similar associations with patients' healthcare experiences. DESIGN Cross-sectional observational study involving telephone surveys and medical record reviews. SETTING Veterans Affairs Pittsburgh Healthcare System. PARTICIPANTS 50 White and 50 African ...
Item Parameter Drift occurs over time for various reasons; when test items lose their initial characteristics, such as difficulty and discrimination parameters. Including cases of item parameter drift are revealed, excessive repetition, changes in the education system, and the position of items and the parameters of poor initialization. Item parameter drift causes of the invariance to be violat...
The psychometric properties of instruments used to measure self-reported experiences of discrimination in epidemiologic studies are rarely assessed, especially regarding construct validity. The authors used 2000-2001 data from the Coronary Artery Risk Development in Young Adults (CARDIA) Study to examine differential item functioning (DIF) in 2 versions of the Experiences of Discrimination (EOD...
INTRODUCTION Multiple-choice questions (MCQs) are a cornerstone of assessment in medical education. Monitoring item properties (difficulty and discrimination) are important means of investigating examination quality. However, most item property guidelines were developed for use on large cohorts of examinees; little empirical work has investigated the suitability of applying guidelines to item d...
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