Meet Our Experts

Alex Casillas, PhD

Alex Casillas is a principal research psychologist in Design Based Research specializing in assessment design and behavioral predictors of performance and persistence in education and work settings.

Becky L. Bobek, PhD

Becky L. Bobek is a principal research scientist at ACT who conducts research in the area of education and career navigation, including the constructs (goals, interests, etc.) and processes (decision-making) that facilitate successful education and work transitions.

Benjamin Andrews, PhD

Benjamin Andrews is a senior psychometrician in the Assessment Transformation department. His research interests include equating, computerized adaptive testing, and reliability.

Chi-Yu Huang, PhD

Chi-Yu Huang is a principal psychometrician in Psychometrics Research specializing in research and analysis in educational psychometrics, data forensics, and accommodations.

Dongmei Li, PhD

Dongmei Li is a principal psychometrician at ACT specializing in test equating, scaling, and growth modeling.

Edgar Sanchez, PhD

Edgar Sanchez, a senior research scientist in Validity and Efficacy Research at ACT, works on predictive modeling of student educational outcomes such as enrollment, persistence, and graduation. His current research focus is on the efficacy of test preparation.

Jason D. Way, PhD

Jason Way is a research psychologist in Center for Social, Emotional, and Academic Learning. He researches behavioral and psychosocial skills, including their relevance to important academic and work outcomes.

Jeff Allen, PhD

Jeff Allen is a statistician in the Research division at ACT. He specializes in longitudinal research linking test scores to educational outcomes and student growth models.

Jeff Schiel, PhD

Jeff Schiel, director of Survey Research at ACT, specializes in the design and methodology of surveys and survey sampling. His interests also include SAS programming and statistical graphics.

Jeffrey Steedle, PhD

Jeffrey Steedle is a senior research scientist in Validity and Efficacy Research specializing in postsecondary outcomes research and validity evidence for ACT's workforce assessment programs.

Jeremy Burrus, PhD

Jeremy Burrus is a senior director in the Center for Social, Emotional, and Academic Learning specializing in the assessment of noncognitive skills.

Jizhi Ling, MS

Jizhi Ling is a data analyst in Validity and Efficacy Research at ACT and works on postsecondary outcomes research.

Joann Moore, PhD

Joann Moore is a research scientist in Validity and Efficacy Research specializing in prediction of secondary and postsecondary outcomes from academic and non-cognitive factors.

Justine Radunzel, PhD

Justine Radunzel is a principal research scientist in Validity and Efficacy Research specializing in postsecondary outcomes research and validity evidence for the ACT test.

Krista Mattern, PhD

Krista Mattern is a senior director in Validity and Efficacy Research specializing in the validity and fairness of assessment scores as well as more general issues in higher education such as enrollment, persistence, and graduation.

Kurt Burkum, PhD

Kurt Burkum is senior director of Research Strategy & Services at ACT. His research specialty is in state and federal policy issues related to college readiness and transitions, particularly for underserved student populations.

Maria Ofelia San Pedro, PhD

Maria Ofelia "Sweet" San Pedro is a research scientist in the Learning, Assessment and Navigation Experiences group at ACT specializing in learning science and learning analytics. She researches on K-12 learning experiences, assessment and instruction within digital learning environments.

Matt Harmston, MA

Matt Harmston is a senior research associate in Research Services specializing in secondary research and report development.

NooRee Huh, PhD

NooRee Huh is a senior psychometrician in Psychometrics Research specializing in research and analysis in educational psychometrics, data forensics, and accommodations.

Paul Nichols, PhD

Paul Nichols is a vice president in Innovative Research Design and Consultation, where he supports principled assessment and product design, the development of validity arguments and the use of methods such as protocol analysis and eye movement tracking.

Raeal Moore, PhD

Raeal Moore is a senior research scientist specializing in survey methodological research and research on education best practices in P-12 schools.

Ruitao Liu, PhD

Ruitao Liu is a senior research scientist in Statistical and Applied Research specializing in Bayesian statistics, predictive modeling, and game-based assessment and learning.

Sien Deng, PhD

Sien Deng is a psychometrician in the ACT Research Division. She specializes in the theory and application of psychometric methods in educational and psychological assessments

Sonya Powers, PhD

Sonya Powers is a senior psychometrician at ACT specializing in test equating, score comparability, and testing of special populations.

Tianli Li, PhD

Tianli Li is a senior psychometrician in Assessment Transformation specializing in psychometric research and supports for large scale testing programs.

Ty Cruce, PhD

Ty Cruce is a principal research scientist in Validity and Efficacy Research at ACT.

Wayne Camara, PhD

Wayne Camara is ACT’s Horace Mann Chair. His research background spans the ACT continuum of solutions. Before he came to ACT, he held positions at the American Psychological Association and College Board, where he served as vice president of research and development.

Wei Tao, PhD

Wei Tao is a principal psychometrician in the Research division at ACT specializing in scaling and equating.

Xiaohong Gao, PhD

Xiaohong Gao is a senior director in Psychometric Research specializing in psychometric analyses using generalizability theory, item-response theory, and classical test theory.

Yu Fang, PhD

Yu Fang is a principal psychometrician in the Research division at ACT. He specializes in multidimensional IRT and equating.