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van der Scheer, Emmelien A.; Bijlsma, Hannah J. E.; Glas, Cees A. W. – School Effectiveness and School Improvement, 2019
A Bayesian IRT-model approach was used to investigate the validity and reliability of student perceptions of teaching quality. Furthermore, the student perceptions were compared with ratings of teaching quality by external observers. Grade 4 students (n = 675) filled out a questionnaire that was used to measure their opinions about the lessons of…
Descriptors: Student Attitudes, Validity, Interrater Reliability, Correlation
Makransky, Guido; Glas, Cees A. W. – International Journal of Testing, 2013
Cognitive ability tests are widely used in organizations around the world because they have high predictive validity in selection contexts. Although these tests typically measure several subdomains, testing is usually carried out for a single subdomain at a time. This can be ineffective when the subdomains assessed are highly correlated. This…
Descriptors: Foreign Countries, Cognitive Ability, Adaptive Testing, Feedback (Response)
Korobko, Oksana B.; Glas, Cees A. W.; Bosker, Roel J.; Luyten, Johan W. – Journal of Educational Measurement, 2008
Methods are presented for comparing grades obtained in a situation where students can choose between different subjects. It must be expected that the comparison between the grades is complicated by the interaction between the students' pattern and level of proficiency on one hand, and the choice of the subjects on the other hand. Three methods…
Descriptors: Item Response Theory, Test Items, Comparative Analysis, Grades (Scholastic)