Open Access. Powered by Scholars. Published by Universities.®
- Publication
Articles 1 - 4 of 4
Full-Text Articles in Education
The Estimation Of Polytomous Item Response Models With Many Dimensions, Nikolai Volodin, Ray J. Adams
The Estimation Of Polytomous Item Response Models With Many Dimensions, Nikolai Volodin, Ray J. Adams
Professor Ray Adams
Identification conditions and an improved estimation method for a D-dimensional mixed coefficients multinomial logit model are discussed. This model is a generalisation of the Adams and Wilson (1997) random coefficients multinomial logit and it can be used to fit multdimensional forms of a wide range of Rasch measurement models. The computational demands of the numerical integration required in fitting such models have limited previous implementations to three and perhaps four-dimensional problems (Glas, 1992; Adams, Wilson and Wang, 1997). This paper illustrates a Monte Carlo integration method that permits the estimation of models with much higher dimensionality. The example in this …
Trialling Of Test Items; Is The Data A Reliable Predictor Of Final Test Performance?, Ross Hudson
Trialling Of Test Items; Is The Data A Reliable Predictor Of Final Test Performance?, Ross Hudson
Dr Ross Hudson
Trialling is seen as a necessary first step in producing a reliable valid assessment tool. However, how reliable is the trialling result in terms of predicting population test performance?
Pisa Reading Literacy Framework, Juliette Mendelovits
Pisa Reading Literacy Framework, Juliette Mendelovits
Juliette Mendelovits
No abstract provided.
Adaptive Testing For Psychological Assessment: How Many Items Are Enough To Run An Adaptive Testing Algorithm?, Michaela Wagner-Menghin, Geoff Masters
Adaptive Testing For Psychological Assessment: How Many Items Are Enough To Run An Adaptive Testing Algorithm?, Michaela Wagner-Menghin, Geoff Masters
Prof Geoff Masters AO
Although the principles of adaptive testing were established in the psychometric literature many years ago (e.g., Weiss, 1977), and practice of adaptive testing is established in educational assessment, it is not yet widespread in psychological assessment. One obstacle to adaptive psychological testing is a lack of clarity about the necessary number of items to run an adaptive algorithm. The study explores the relationship between item bank size, test length and measurement precision. Simulated adaptive test runs (allowing a maximum of 30 items per person) out of an item bank with 10 items per ability level (covering .5 logits, 150 items …