Results 91 to 100 of about 48,174 (313)

Investigating the Impact of Item Parameter Drift for Item Response Theory Models with Mixture Distributions

Frontiers in Psychology, 2016
This study investigates the impact of item parameter drift (IPD) on parameter and ability estimation when the underlying measurement model fits a mixture distribution, thereby violating the item invariance property of unidimensional item response theory (
Yoon Soo ePark, Young-Sun eLee, Kuan eXing   +2 more
doaj   +1 more source

The impact of differential item functioning on the Warwick-Edinburgh Mental Well-Being Scale

, 2018
Establishing the internal validity of psychometric instruments is an important research priority, and is especially vital for instruments that are used to collect data to guide public policy decisions.
Marais, Ida, Goh, Hong Eng, Ireland, Michael   +2 more
core  

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

Bias-Corrected Root Mean Square Deviation Estimators

Foundations
The root mean square deviation (RMSD) is a widely used item fit statistic in item response models. However, the sample RMSD is known to exhibit positive bias in small samples. To address this, seven alternative bias-corrected RMSD estimators are proposed
Alexander Robitzsch
doaj   +1 more source

Determining Gender Differential Item Functioning for Mathematics in Coeducational School Culture

Malaysian Journal of Learning and Instruction, 2019
Purpose - In an attempt to explore item characteristics that behave differently between boys and girls, this comparative study examines gender Differential Item Functioning in a school culture that is noted to be ‘thriving’ mathematically ...
S. Kanageswari Suppiah Shanmugam
doaj   +1 more source

Rab14 regulates the transport of human papillomavirus to the trans‐Golgi network for infectious cell entry

FEBS Letters, EarlyView.
This study reveals that the small GTPase Rab14 is necessary for human papillomavirus (HPV) infection and plays an essential role in the transport of virions to the trans‐Golgi network (TGN). HPV in the early endosome (EE), which harbors GTP‐bound Rab14, is transported to the TGN through the switch of Rab14 from its GTP‐bound to GDP‐bound form.
Yoshiyuki Ishii, Iwao Kukimoto
wiley   +1 more source

Measurement Comparability of Reading in the English and French Canadian Populations: Special Case of the 2011 Progress in International Reading Literacy Study

Frontiers in Education, 2019
The purpose of this study is to examine item equivalence and score comparability of the Progress in International Reading Literacy Study (PIRLS) 2011 for the Canadian French and English language groups.
Shawna Goodrich, Kadriye Ercikan
doaj   +1 more source

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

FEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas, Brigitta Maruzs, Zsófia E. Kálmán, Tomas Klumpler, Gyula Batta, Bálint Péterfia, Zoltán Gáspári   +6 more
wiley   +1 more source

Psychometric properties of Generalized Anxiety Disorder-7 during COVID-19: item response theory analysis [PDF]

Psico-USF
This study evaluated the psychometric properties of the Generalized Anxiety Disorder Scale 7-item in a Brazilian sample during the COVID-19 pandemic using item response theory.
Beatriz Oliveira-Santos, Luanna dos Santos Silva, Dandara Palhano, André Faro   +3 more
doaj   +2 more sources

Potential application of item-response theory to interpretation of medical codes in electronic patient records [PDF]

, 2011
Background: electronic patient records are generally coded using extensive sets of codes but the significance of the utilisation of individual codes may be unclear. Item response theory (IRT) models are used to characterise the psychometric properties of
Van Staa, Tjeerd; id_orcid, Little, P., Delaney, B., Delaney, Brendan, Wolfe, C., van Staa, Tjeerd, Gulliford Martin C, Grieve Andy, Gulliford, M.C., Charlton, Judith, Gulliford, Martin C., Little, Paul, Martin C Gulliford, Grieve, A., van Staa, T., Yardley, L., Dregan Alex, Dregan, A., Moore, M., Taweel, Adel, Andy Grieve, Moore, Michael, Charlton, J., Dregan, Alex; id_orcid, Taweel, A., Tjeerd van Staa, Dregan, Alex, Yardley, Lucy, van Staa Tjeerd, null null, Wolfe, Charles, Rudd, A., Gulliford, Martin C, Rudd, Anthony, eCRT Research Team, Grieve, Andy, Alex Dregan   +36 more
core   +1 more source