Measuring differential item and test functioning across academic disciplines
نویسندگان
چکیده
منابع مشابه
Measuring differential item and test functioning across academic disciplines
Differential item functioning (DIF) is when a test item favors or hinders a characteristic exhibited by group members of a test-taking population. DIF analyses are statistical procedures used to determine to what extent the content of an item affects the item endorsement of sub-groups of test-takers. If DIF is found for many items on the test, the final test scores do not represent the same mea...
متن کاملDifferential Item Functioning and Unidimensionality in the Pearson Test of English Academic
Since the Pearson Test of English Academic (PTE Academic) was designed to assess skill differences among test-takers at all points along the ability continuum, rather than to determine cutoff scores, it is important to examine the extent to which the instrument assesses what it is intended to measure (validity) as well as the extent to which the test is consistent (reliability) in measuring ELL...
متن کاملMEASURING AND DETECTING DIFFERENTIAL ITEM FUNCTIONING IN CRITERION-REFERENCED LICENSING TEST A Theoretic Comparison of Methods
The validity of a measurement instrument depends on the quality of the items included in the instrument. The overall aim was to compare methods for detecting and measuring differential item functioning, DIF, in order to find a suitable method for examining DIF in a dichotomously scored criterion-referenced licensing test. The methods were discussed with respect to whether they are parametric, t...
متن کاملDetecting differential item functioning in behavioral indicators across parallel forms.
BACKGROUND Despite the crucial importance of the notion of parallel forms within Classical Test Theory, the degree of parallelism between two forms of a test cannot be directly verified due to the unobservable nature of true scores. We intend to overcome some of the limitations of traditional approaches to analyzing parallelism by using the Differential Item Functioning framework. METHOD We c...
متن کاملAssessing Differential Item Functioning on the Test of Relational Reasoning
The test of relational reasoning (TORR) is designed to assess the ability to identify complex patterns within visuospatial stimuli. The TORR is designed for use in school and university settings, and therefore, its measurement invariance across diverse groups is critical. In this investigation, a large sample, representative of a major university on key demographic variables, was collected, and...
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ژورنال
عنوان ژورنال: Language Testing in Asia
سال: 2013
ISSN: 2229-0443
DOI: 10.1186/2229-0443-3-9