Contact Information

368 Lindquist Center
College of Education
The University of Iowa
Iowa City IA 52242 USA

• Educational Measurement and Statistics
• Psychological and Quantitative Foundations

• Ph.D. (1994), Educational Research Methodology, University of Pittsburgh
• M.Ed. (1990), Educational Foundations, University of New Brunswick
• B.Ed. (1984), Secondary Mathematics Education, The University of Western Ontario
• B.Math. (1984), University of Waterloo

• Ontario Teacher's Certificate (Mathematics/Computer Science, Intermediate/Senior)
• Honour Specialist--Mathematics, University of Toronto
• Guidance--Specialist, University of Toronto

• Associate Professor, Educational Measurement and Statistics, 2000 - present
• Assistant Professor, Educational Measurement and Statistics, 1994 - 2000
• Head of Guidance, Albert College, 1987 - 1989
• Head of Mathematics, Albert College, 1986 - 1989
• Teacher (Mathematics, Computer Science, & Guidance), Albert College, 1984 - 1989

• American Educational Research Association (Division D Program Chair, 2001 - 2002)
• National Council on Measurement in Education
• National Council of Teachers of Mathematics
• European Association for Research on Learning and Instruction
• Iowa Educational Research and Evaluation Association

• Monahan, P. O., Lee, W. C., & Ankenmann, R. D. (in press). Generating dichotomous scores with the four-parameter beta compound binomial model. Journal of Educational Measurement.
• Monahan, P. O., & Ankenmann, R. D. (2005). Effect of unequal variances in proficiency distributions on Type-I error of the Mantel-Haenszel chi-square test for differential item functioning. Journal of Educational Measurement, 42(2), 101-131.
• Chen, S., Ankenmann, R. D., & Spray, J. A. (2003). The relationship between item exposure and test overlap in computerized adaptive testing. Journal of Educational Measurement, 40(2), 129-145.
• Ankenmann, R. D., Witt, E. A., & Dunbar, S. B. (1999). An investigation of the power of the likelihood ratio goodness-of-fit statistic in detecting differential item functioning. Journal of Educational Measurement, 36(4), 277-300.
• Feldt, L. S., & Ankenmann, R. D. (1999). Determining sample size for a test of the equality of alpha coefficients when the number of part-tests is small. Psychological Methods, 4(4), 366-377.
• Lane, S., Stone, C. A., Ankenmann, R. D., & Liu, M. (1995). Examination of the assumptions and properties of the graded item response model: An example using a mathematics performance assessment. Applied Measurement in Education, 8(4), 313-340.

• Design and development of large-scale achievement tests
• Reliability and validity of test-score interpretations
• Performance assessment
• Students' reasoning on mathematics assessments
• Application of mathematical models to measurement problems

• 07P:025 Elementary Statistics and Inference
• 07P:143 Introduction to Statistical Methods
• 7P:220 Educational Research Methodology
• 7P:257 Educational Measurement and Evaluation