Results 121 to 130 of about 234,443 (351)

Differential Item Functioning via Robust Scaling

Psychometrika
This paper proposes a method for assessing differential item functioning (DIF) in item response theory (IRT) models. The method does not require pre-specification of anchor items, which is its main virtue. It is developed in two main steps: first by showing how DIF can be re-formulated as a problem of outlier detection in IRT-based scaling and then ...
openaire   +3 more sources

Psychometric evaluation of Persian nomophobia questionnaire: differential item functioning and measurement invariance across gender [PDF]

, 2018
Background and aims: Research examining problematic mobile phone use has increased markedly over the past 5 years and has been related to “no mobile phone phobia” (so-called nomophobia). The 20-item Nomophobia Questionnaire (NMP-Q) is the only instrument
Andreassen, Andreassen, Argumosa-Villar, Argumosa-Villar, Asghari, Asghari, Bagheri, Bagheri, Bagozzi, Bagozzi, Beaton, Beaton, Chang, Chang, Chang, Chang, Chen, Chen, Cheng, Cheng, Crocker, Crocker, Fornell, Fornell, Ghanizadeh, Ghanizadeh, González-Cabrera, González-Cabrera, Gregorich, Gregorich, Gronlund, Gronlund, Ikeda, Ikeda, Ingalhalikar, Ingalhalikar, Jafari, Jafari, Jette, Jette, Kang, Kang, Khan, Khan, Khoshnevisan, Khoshnevisan, King, King, King, King, King, King, Kook, Kook, Lin, Lin, Lin, Lin, Lin, Lin, Lin, Lin, Lin, Lin, Lin, Lin, Lin, Lin, Mercier, Mercier, Mohammadsalehi, Mohammadsalehi, Monacis, Monacis, Nathan, Nathan, Ostovar, Ostovar, Pappas, Pappas, Pontes, Pontes, Rosseel, Rosseel, Saffari, Saffari, Sahin, Sahin, Shih, Shih, Thompson, Thompson, Walsh, Walsh, Wang, Wang, Wu, Wu, Yang, Yang, Yildirim, Yildirim, Zheng, Zheng   +103 more
core   +4 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Use of differential item functioning (DIF) analysis for bias analysis in test construction

SA Journal of Industrial Psychology, 2004
When differential item functioning (DIF) item analysis procedures based on item response theory (IRT) are used during test construction, it is possible to draw item characteristic curves for the same item for different subgroups.
Marié De Beer
doaj   +1 more source

The ubiquitin ligase RNF115 is required for the clearance of damaged lysosomes

FEBS Letters, EarlyView.
Upon lysosomal rupture, an E3 ubiquitin ligase RNF115 translocates from the cytosol to the damaged lysosomal membrane. Moreover, RNF115 depletion impairs the clearance of damaged lysosomes, identifying it as a key regulator of lysosomal quality control.
Sae Nakanaga, Toshiki Takahashi, Akiko Kuma, Hiroyuki Kawahara   +3 more
wiley   +1 more source

Ethnic differential item functioning in the assessment of quality of life in cancer patients

Health and Quality of Life Outcomes, 2005
Background Past research has shown that Filipino cancer patients report lower levels of quality of life (QoL) than other ethnic groups. One possible explanation for this is that Filipinos do not define QoL in the same manner as others, resulting in bias ...
Gotay Carolyn C, Pagano Ian S
doaj   +1 more source

The neural crest‐associated gene ERRFI1 is involved in melanoma progression and resistance toward targeted therapy

Molecular Oncology, EarlyView.
ERRFI1, a neural crest (NC)‐associated gene, was upregulated in melanoma and negatively correlated with the expression of melanocytic differentiation markers and the susceptibility of melanoma cells toward BRAF inhibitors (BRAFi). Knocking down ERRFI1 significantly increased the sensitivity of melanoma cells to BRAFi.
Nina Wang, Qian Sun, Daniel Novak, Lei Zhu, Juliane Poelchen, Tamara Steinfass, Yiman Wang, Viktor Umansky, Jochen Utikal   +8 more
wiley   +1 more source

Gender differential item functioning on a national field-specific test: The case of PhD entrance exam of TEFL in Iran [PDF]

Iranian Journal of Language Teaching Research, 2016
Differential Item Functioning (DIF) exists when examinees of equal ability from different groups have different probabilities of successful performance in a certain item.
Alireza Ahmadi, Ali Darabi Bazvand
doaj  

Investigating Different Theory-Based Differential Item Functioning Methods Under Different Scoring Situations

International Journal of Assessment Tools in Education, 2017
This study intended to investigate theoperations of various theory-based Differential Item Functioning (DIF) methodsunder different scoring situations.
Hüseyin Selvi, Devrim Alıcı
doaj   +1 more source

A new method for detecting differential item functioning in the Rasch model [PDF]

Differential item functioning (DIF) can lead to an unfair advantage or disadvantage for certain subgroups in educational and psychological testing. Therefore, a variety of statistical methods has been suggested for detecting DIF in the Rasch model.
Achim Zeileis, Carolin Strobl, Julia Kopf   +2 more
core