Results 41 to 50 of about 1,166,070 (278)

Estimating learners' vocabulary size under item response theory

Vocabulary Learning and Instruction, 2014
Perhaps the most qualitatively interpretable vocabulary test score is an estimate of the total number of words the learner knows in the tested domain, such as a frequency word list, or vocabulary taught as part of a course curriculum.
Aaron Gibson, Jeffrey Stewart
doaj   +1 more source

Differential item functioning in the Patient Reported Outcomes Measurement Information System Pediatric Short Forms in a sample of children and adolescents with cerebral palsy. [PDF]

, 2016
AIM: The present study examined the Patient Reported Outcomes Measurement Information System (PROMIS) Mobility, Fatigue, and Pain Interference Short Forms (SFs) in children and adolescents with cerebral palsy (CP) for the presence of differential item ...
Bjorner, Cai, Cook, Cook, Coster, Dewitt, Edelen, Gershon, Irwin, Kratz, Lai, Magasi, Mulcahey, Palisano, Reeve, Russell, Varni, Woods   +17 more
core   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

ITEM RESPONSE THEORY ANALYSIS ON STUDENT STATISTICAL LITERACY TESTS

Pedagogik: Jurnal Pendidikan, 2023
This study aims to evaluate the quality of statistical literacy instruments. With the ex post facto approach, the results of the statistical literacy tests of 150 students were used.
Mila Yulia Herosian, Yeni Rafita Sihombing, Delyanti Azzumarito Pulungan   +2 more
doaj   +1 more source

Item response theory analysis of the mechanics baseline test [PDF]

, 2011
Item response theory is useful in both the development and evaluation of assessments and in computing standardized measures of student performance. In item response theory, individual parameters (difficulty, discrimination) for each item or question are ...
Abbott, Jonathan E., Cardamone, Carolin, Pawl, Andrew, Pritchard, David E., Rayyan, Saif, Seaton, Daniel   +5 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Item response theory in educational assessment and evaluation

Mesure et Évaluation en Éducation, 2008
Item response theory provides a useful and theoretically well-founded framework for educational measurement. It supports such activities as the construction of measurement instruments, linking and equating measurements, and evaluation of test bias and ...
Cees A.W. Glas
doaj   +1 more source

The Schizotypal Ambivalence Scale: An Item Response Theory Analysis

Behavioral Sciences, 2022
Ambivalence has a prominent role in the historical formulations of schizotypy and schizophrenia, as well as borderline personality disorder. However, it has been overlooked by our current diagnostic nomenclature.
Lauren B. Deters, Paul J. Silvia, Thomas R. Kwapil   +2 more
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Students’ proficiency scores within multitrait item response theory

Physical Review Special Topics. Physics Education Research, 2015
In this paper we present a series of item response models of data collected using the Force Concept Inventory. The Force Concept Inventory (FCI) was designed to poll the Newtonian conception of force viewed as a multidimensional concept, that is, as a ...
Terry F. Scott, Daniel Schumayer
doaj   +1 more source