Jijun Zhang is a senior research analyst at AIR with expertise in statistical analysis of large-scale complex survey data utilizing advanced statistical analysis techniques.
Andrew Brudevold-Newman is the Interim Country Director for the Zambia Office and an economic researcher in the International Research & Evaluation program at AIR. Dr.
Janet U. Levings is an educational consultant working with Youth Development and Supportive Learning Environments at AIR.
Joshua R. Polanin is a principal researcher in the Research and Evaluation program at AIR. He has extensive experience in quantitative methodology, and has led or co-led more than 15 peer-reviewed, published meta-analyses. Dr.
Claude Kasonka is the Regional Director for the AIR Office in Zambia. Claude has over 14 years of experience in Monitoring and Evaluation and Economic Analysis. Prior to joining AIR, Claude was M&E and Economics Director for Millennium Challenge Account- Zambia for five years.
Yael Harris is vice president for health research and evaluation at AIR. Drawing on 22 years of experience leading research projects to advance access, quality, payment reform, and other policies to transform health care delivery, Dr.
Donna Warthan is a senior technical consultant at AIR. Her primary responsibilities include managing the overall project and budget for four federal School Improvement Grant projects in Virginia and New York.
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.