Biblio
The Rasch rating model and the disordered threshold controversy. Educational and Psychological Measurement, 72, 547–573.
. (2012). 
On the Relationship Between Differential Item Functioning and Item Difficulty An Issue of Methods? Item Response Theory Approach to Differential Item Functioning. Educational and Psychological Measurement, 72, 5–36.
. (2012). 
Responding To A Challenge That Learning Progressions Pose To Measurement Practice. In Learning progressions in science (pp. 317–343). Springer.
. (2012). 
Road maps for learning: A guide to the navigation of learning progressions. Measurement: Interdisciplinary Research & Perspective, 9, 71–123.
. (2011). 
The role of mathematical models in measurement: A perspective from psychometrics. Universitätsbibliothek Ilmenau.
. (2011). 
Random parameter structure and the testlet model: extension of the Rasch testlet model. Journal of applied measurement, 10, 394–407.
. (2008). 
Research on learning: Implications for assessment in higher education. Presented at the American Association for Higher Education Assessment Conference, Seattle, WA.
. (2003, June). Reinventing Online Education From a Social Context. Presented at the "Online Education in California Community Colleges: Faculty Perspectives" Conference at College of San Mateo.
. (1999, October).