Results 201 to 210 of about 2,264,558 (236)

Not just Rubisco: integrated strategies to overcome the biochemical limitations of C₃ photosynthesis. [PDF]

Front Plant Sci
Patil SS, Muthan B, Sanjaya SA.
europepmc   +1 more source

Exploration of the Validity of Gender Differences in Mathematics Assessment Using Differential Bundle Functioning

International Journal of Testing, 2011
The aims of this study are (a) to examine the sources of differential functioning by gender via differential bundle functioning (DBF) in mathematics assessment and (b) to use DBF to explore whether the differential functioning displayed is construct-relevant or construct-irrelevant.
Ong, Y. M., Williams, J. S., Lamprianou, Iasonas, Ong, Y. M., Williams, J. S., Lamprianou, Iasonas   +5 more
exaly   +5 more sources

Exploring differential bundle functioning in mathematics by gender: the effect of hierarchical modelling

International Journal of Research and Method in Education, 2013
Researchers interested in exploring substantive group differences are increasingly attending to bundles of items (or testlets): the aim is to understand how gender differences, for instance, are explained by differential performances on different types or bundles of items, hence differential bundle functioning (DBF).
Ong, Y. M., Williams, J., Lamprianou, Iasonas, Ong, Y. M., Williams, J., Lamprianou, Iasonas   +5 more
exaly   +4 more sources

Distinguishing Differential Testlet Functioning From Differential Bundle Functioning Using the Multilevel Measurement Model

Educational and Psychological Measurement, 2011
This study extends the multilevel measurement model to handle testlet-based dependencies. A flexible two-level testlet response model (the MMMT-2 model) for dichotomous items is introduced that permits assessment of differential testlet functioning (DTLF).
S. Natasha Beretvas, Cindy M. Walker
openaire   +2 more sources

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Assessing Differential Bundle Functioning Using Meta‐Analysis

Journal of Educational Measurement, 2021
AbstractDifferential bundle functioning (DBF) has been proposed to quantify the accumulated amount of differential item functioning (DIF) in an item cluster/bundle (Douglas, Roussos, and Stout). The simultaneous item bias test (SIBTEST, Shealy and Stout) has been used to test for DBF (e.g., Walker, Zhang, and Surber).
Betsy Jane Becker, Lanrong Li
exaly   +2 more sources

The MIMIC Model as a Tool for Differential Bundle Functioning Detection

Applied Psychological Measurement, 2012
Increasingly, researchers interested in identifying potentially biased test items are encouraged to use a confirmatory, rather than exploratory, approach. One such method for confirmatory testing is rooted in differential bundle functioning (DBF), where hypotheses regarding potential differential item functioning (DIF) for sets of items (bundles) are ...
Holmes Finch
exaly   +2 more sources

Establishing Effect Size Guidelines for Interpreting the Results of Differential Bundle Functioning Analyses Using SIBTEST

Educational and Psychological Measurement, 2011
The purpose of this simulation study was to establish general effect size guidelines for interpreting the results of differential bundle functioning (DBF) analyses using simultaneous item bias test (SIBTEST). Three factors were manipulated: number of items in a bundle, test length, and magnitude of uniform differential item functioning (DIF) against ...
Cindy M. Walker, Bo Zhang, Kathleen Banks, Kevin Cappaert   +3 more
openaire   +2 more sources

Differential Bundle Functioning Using the DFIT Framework: Procedures for Identifying Possible Sources of Differential Functioning

Applied Measurement in Education, 1998
A general framework for assessing differential functioning of items and tests (DFIT) was recently proposed. Both unidimensional and multidimensional tests with either dichotomous or polytomous scoring can be handled within this framework. In this study, the DFIT framework is expanded to include differential bundle functioning (DBF) as a mechanism for ...
Nambury S Raju
exaly   +2 more sources

Identifying Possible Sources of Differential Functioning Using Differential Bundle Functioning With Polytomously Scored Data

Applied Measurement in Education, 2007
Oshima, Raju, Flowers, and Slinde (1998) described procedures for identifying sources of differential functioning for dichotomous data using differential bundle functioning (DBF) derived from the differential functioning of items and test (DFIT) framework (Raju, van der Linden, & Fleer, 1995).
Nambury S Raju
exaly   +2 more sources