Allan S. Cohen

Allan Cohen is Professor Emeritus, Quantitative Methodology Program, Department of Educational Psychology. Dr. Cohen’s research involves examining methodological issues in educational measurement with respect to applications in test design and development. Most of his work has focused on (1) problems in the construction and maintenance of achievement tests, including linking and equating, detection of differential item functioning, and estimating model parameters under item response theory, and (2) investigating new methods for better understanding the test taking behaviors of examinees including latent variable models and methods from machine learning. In addition to his own research, he collaborates on problems requiring statistical expertise mainly in psychometrics.