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Schizotypy, marijuana, and differential item functioning
Human Psychopharmacology: Clinical and Experimental, 2006AbstractAt least five studies report elevated schizotypy scores in cannabis users. The current research confirms higher schizotypy scores in regular cannabis users. Nevertheless, further analyses reveal that select items on the brief version of the Schizotypal Personality Questionnaire do not function comparably in current and former users.
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Differential Item Functioning in Attitude Assessment
Evaluation Practice, 1997Differential item functioning (DIF) is not often seen in the literature on attitude assessment. A brief discussion of DIF and methods of implementation is followed by an illustrative example from a program evaluation, using an attitude-towards-science scale with 1550 children in grades one through six. An item exhibiting substantial DIF with respect to
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Screening Test Items for Differential Item Functioning
Journal of Educational and Behavioral Statistics, 2014A method for medical screening is adapted to differential item functioning (DIF). Its essential elements are explicit declarations of the level of DIF that is acceptable and of the loss function that quantifies the consequences of the two kinds of inappropriate classification of an item.
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Assessment of differential item functioning.
Journal of applied measurement, 2009This study addresses several important issues in assessment of differential item functioning (DIF). It starts with the definition of DIF, effectiveness of using item fit statistics to detect DIF, and linear modeling of DIF in dichotomous items, polytomous items, facets, and testlet-based items.
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Differential Item Functioning.
The Statistician, 1994Andrew C. Gudgeon +2 more
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