Ryan Williams is a principal researcher at AIR with expertise in causal inference methods and meta-analysis. Dr. Williams is the principal investigator on an Institute for Education Sciences (IES) meta-analysis that explores sources of heterogeneity in mathematics intervention effects.
Alicia Espinoza is a senior technical assistance consultant at AIR. Her expertise includes coaching teacher leaders, school administrators, and district leaders through the implementation of evidence-based district and school improvement systems, processes, and practices.
Felice Trirogoff is a communications specialist at American Institutes for Research (AIR), where her primary responsibilities include reviewing, editing, proofreading, and writing deliverables and public information materials.
Seth Brown is a senior researcher at AIR.
David English is a technical assistance consultant at AIR supporting its work on Student Learning Objectives. He joined the AIR staff in the summer of 2014. Most recently, he worked for the U.S.
Jenifer J. Harr-Robins, a principal researcher at AIR, has extensive special education research and project management experience.
Saida Mamedova is a senior psychometrician/statistician with experience in complex survey and assessment data analysis, survey questionnaire and sampling design, technical writing, and disclosure risk analysis.