Results 181 to 190 of about 146,698 (224)

EASY-DIF

Applied Psychological Measurement, 2010
Practitioners are increasingly becoming interested in Differential Item Functioning (DIF) forimproving the validity of test and scale interpretations. Among the statistical procedures availableto assess DIF in dichotomous and polytomous items, the Mantel-Haenszel chi-square (1959) andother standardization proceduresmay beparticularly attractive to ...
Andrés González, José-Luis Padilla, M. Dolores Hidalgo, Juana Gómez-Benito, Isabel Benítez   +4 more
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Broadband development and firm creation: Dif-in-dif estimates for Germany

AHFE International, 2022
Although some of the outcomes of the digital transformation are reflected in the scientific literature, the connection between high-speed internet transmission rates and firm entries is still poorly studied. While some positive impact of basic broadband availability in Germany was found in our previous studies, in this paper we decided to examine the ...
Kirill Sarachuk, Magdalena Missler
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An Examination of Item Context Effects, DIF, and Gender DIF

Applied Measurement in Education, 2001
This investigation examined whether the patterns of gender differential item functioning (DIF) present in parcels of items are influenced by changes in item position. Items were studied collectively to detect differential bundle functioning (DBF) on 2 forms of a test of mathematics for college freshmen. To investigate order effects, 2 forms of the test
Katherine E. Ryan, Shuwan Chiu
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DIF signalling and cell fate

Seminars in Cell & Developmental Biology, 1999
The DIFs are a family of secreted chlorinated molecules that control cell fate during development of Dictyostelium cells in culture and probably during normal development too. They induce stalk cell differentiation and suppress spore cell formation. The biosynthetic and inactivation pathways of DIF-1 (the major bioactivity) have been worked out.
Kay, Robert R., Flatman, Paul, Thompson, Christopher R L   +2 more
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Not all DIF is shaped similarly

Psychometrika, 2021
In response to the target article by Teresi et al. (2021), we explain why the article is useful and we also present a different approach. An alternative category of differential item functioning (DIF) is presented with a corresponding way of modeling DIF, based on random person and random item effects and explanatory covariates.
De Boeck, Paul, Cho, Sun-Joo
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Impact of unbalanced DIF item proportions on group-specific DIF identification

Communications in Statistics - Theory and Methods, 2018
AbstractDifferences in type I error and power rates for majority and minority groups are investigated when differential item functioning (DIF) contamination in a test is unbalanced.
Ronna C. Turner, Elizabeth A. Keiffer
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Interactive DIF detection by HLM : does interacted DIF matter?

2018
Title from PDF of title page (University of Missouri--Columbia, viewed on March 10, 2010). ; The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. ; Thesis advisor: Dr. Steve Osterlind. ; M.A. University of Missouri--Columbia 2009.
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McDonald's DIF Analysis App

2020
This app allows users to implement an approach to differential item functioning (DIF) described in Chapter 15 of McDonald (1999). The app runs in an Excel spreadsheet and requires as input the results of separate confirmatory factor analyses of a reference and a focal group.
Zanfirescu, Șerban Andrei, de Bruin, Gideon P.   +1 more
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Simultaneous DIF Amplification and Cancellation: Shealy‐Stout's Test for DIF

Journal of Educational Measurement, 1993
The present study investigates the phenomena of simultaneous DIF amplification and cancellation and SIBTEST's role in detecting such. A variety of simulated test data were generated for this purpose. In addition, real test data from various sources were analyzed.
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DIF Mathcad Worksheets

2013
Two Mathcad worksheets allow full mathematical follow-up of the equations given in the previous chapter. Complete calculations of the two DIF variants are given.
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