Results 61 to 70 of about 13,793,876 (195)

Multidimensional unipolar IRT and applications to the measurement of print exposure

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Item response theory (IRT) has been a prominent modelling framework in educational and psychological measurement. Traditional IRT models are bipolar, commonly assuming symmetric measurement link functions and symmetric trait distributions over a latent continuum unbounded at both ends. However, many measured constructs, such as print exposure,
Qi (Helen) Huang, Daniel M. Bolt
wiley   +1 more source

Enhancing test quality in Lesotho Basic Education through Classical Test and Item Response Theory Analyses

Journal of Computer Adaptive Testing in Africa
  This study developed and psychometrically evaluated a Grade 6 mathematics test for Lesotho’s Cambridge curriculum using Classical Test Theory (CTT) and Item Response Theory (IRT). A quantitative psychometric design involving 200 learners from Cambridge
Lefa Clement Thamae
doaj   +1 more source

On the asymmetry, complexity and predicted data patterns of nontraditional item response theory models

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract Traditional item response theory (IRT) models involve symmetric response probability functions, but a developing area of research has focused on asymmetric alternatives. To date, these studies have focused primarily on introducing new asymmetric models, detailing their mathematical formulations, explaining how to interpret their item ...
Hyejin Shim, Wes Bonifay
wiley   +1 more source

Estimation of Standard Error, Linking Error, and Total Error for Robust and Nonrobust Linking Methods in the Two-Parameter Logistic Model

Stats
The two-parameter logistic (2PL) item response theory model is a statistical model for analyzing multivariate binary data. In this article, two groups are brought onto a common metric using the 2PL model using linking methods. The linking methods of mean–
Alexander Robitzsch
doaj   +1 more source

Measuring Cognitive Skills in African Labor Markets: A Bounding Approach to Non‐Completion in the STEP Surveys

LABOUR, EarlyView.
ABSTRACT This paper addresses the problem of assessment non‐completion in surveys within the context of cognitive skills measurement in sub‐Saharan Africa. The World Bank's STEP Skills Measurement Program represented a major initiative to measure skills in low‐ and middle‐income countries, with surveys conducted in two African countries, Ghana and ...
Andreas Backhaus
wiley   +1 more source

A Comparison of Linking Methods for Longitudinal Designs with the 2PL Model Under Item Parameter Drift

Applied Measurement in Education
This study investigates the longitudinal linking of dichotomous item responses at three time points, focusing on the performance of Haberman linking, Haebara linking, Stocking-Lord linking, and concurrent calibration in the presence of item parameter drift (IPD). Two general linking approaches, joint and chain linking, are examined.
Oskar Engels, Oliver Lüdtke, Alexander Robitzsch   +2 more
openaire   +1 more source

Integrating Global Citizenship Into Mathematics Education: Development and Validation of a Scenario‐Based Assessment

School Science and Mathematics, EarlyView.
ABSTRACT This study develops and validates a scenario‐based assessment for global citizenship within mathematics contexts. It addresses the need for students to engage thoughtfully with global challenges by linking civic education and mathematics. The assessment tool captures competencies essential for global citizenship, including presenting opinions ...
Haemee Rim, Sun Hee Kim, Jihyun Hwang
wiley   +1 more source

Sub-series 2: Publications

, 2021
Bimonthly magazine discussing topics related to aviation and model airplane engines including collecting, restoring, maintaining, and identifying engines, along with ...
The Model Museum, Daniels, Timothy J.
core   +1 more source

Mechanical Properties and Testing Strategies for Two‐Photon Lithography: A Review of Current Practices and Emerging Challenges

Laser &Photonics Reviews, Volume 20, Issue 17, 3 September 2026.
Two‐photon lithography enables the fabrication of complex 3D microstructures with tunable mechanical properties spanning from soft hydrogels to rigid hybrid networks. This review summarizes how material composition, printing parameters, and post‐processing govern stiffness and viscoelasticity, highlighting advanced characterization methods and emerging
Dalila Fontana, Edoardo Rossi, Marco Sebastiani, Edoardo Bemporad, Angelo Accardo, Alberto Rainer, Enrico D. Lemma   +6 more
wiley   +1 more source

Faces and phases of epistemic curiosity in science learning: A longitudinal study

British Journal of Developmental Psychology, Volume 44, Issue 3, Page 657-670, September 2026.
Different faces of epistemic curiosity shape science learning across development. While early scientific reasoning depends on the joint action of interest‐type and deprivation‐type curiosity, science knowledge is robustly driven by interest‐type curiosity, revealing a developmental reweighting of motivational mechanisms.
Susanne Koerber, Christopher Osterhaus
wiley   +1 more source