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Sean McClellan, Ph.D. is a mixed-methods researcher with over a decade of experience in full cycle health services research. He has experience managing research projects, developing analytic designs, cleaning and analyzing administrative data, fielding rigorous surveys, conducting qualitative interviews, and communicating findings in plain language.

Sarah Gibson is a project-management specialist with 23 years of experience in public policy research. She has more than 20 years of experience managing complex projects, implementing random assignment studies and researching and analyzing policy for clients such as the Social Security Administration and the Department of Housing and Urban Development. She is proficient in project management, including resource management, budgeting and quality control.

Elizabeth Giardino’s evaluation and technical assistance work on housing, community development, asset building, and government innovation policies and programs promotes opportunity and healthy outcomes for people across the U.S. Giardino specializes in leading teams, strategic planning, and relationship building, and has proven expertise in incorporating community-based participatory research into technical assistance engagements.

Mbuso Jama has more than 17 years of experience as a Monitoring Evaluation Accountability Research and Learning expert (MEAL and MERL). His work has involved humanitarian, rehabilitation, and development efforts in Africa, Asia, and Eastern Partnership countries. His experience ranges from designing MEAL systems for adaptive management to impact evaluations. He has worked on projects funded by the Foreign, Commonwealth & Development Office (FCDO), United Nations, US Agency for International Development (USAID), Canadian International Development Agency, Department of Foreign Affairs and Trade, European Union, and European Civil Protection and Humanitarian Aid Operations.

Adam Schaefer has over 16 years’ experience developing and managing environmental epidemiology research and evaluation projects. He is an expert in the health impacts of environmental exposures and has worked on both national and international projects, focusing on infectious disease, toxicology, health surveillance, and One Health. Before coming to Abt, Schaefer was a researcher at Florida Atlantic University. He has published numerous epidemiological studies in peer-reviewed journals.

Dr. Karen Stein is a lead survey methodologist with more than 15 years of research experience designing and pretesting surveys, conducting qualitative studies, and managing projects and programs. She has overseen teams designing and implementing methodologies, including 1:1 interviews, usability testing, and data analysis. She has made recommendations to major clients such as the Food and Drug Administration (FDA), Centers for Disease Control and Prevention, Census Bureau, Food and Nutrition Service, Internal Revenue Service, Bureau of Labor Statistics, and Department of Justice (DOJ).

Katrina L. Bledsoe, Ph.D., is a trained evaluator, mixed methodologist, and social psychologist with evaluation experience in both U.S. and international settings. Dr. Bledsoe’s evaluation work has focused on locally-led social services, health and education evaluation and programming, mixed methodology and methods, theory-driven evaluation, and topics in applied social psychology.

Dr. Tiffany G. Harris is an epidemiologist with over 20 years of experience working in public health. She has overseen surveillance, program implementation and management, monitoring and evaluation, informatics, and data analysis and dissemination at the local, federal, and international level. She focuses on HIV, tuberculosis, COVID-19, and other infectious and non-infectious diseases.

Kelly Wagner has over 25 years of experience designing and delivering technical assistance, training, and capacity building. A skilled public health professional trained in epidemiology, she has developed and led more than 10 national TA programs for federal awardees from various agencies including the Substance Abuse and Mental Health Services Administration (SAMHSA), the Health Resources and Services Administration (HRSA), and offices within the Department of Health and Human Services Office of the Assistant Secretary for Health (OASH). Wagner has worked with community-based organizations, health centers, academic institutions, and state/local health agencies, reaching target audiences with unique and diverse public health needs across the lifespan. 

Molly Irwin has more than 25 years of experience leading large-scale research and evaluation efforts and working with policy makers, researchers, and practitioners to build and use evidence. Irwin has worked to improve public programs and policy outcomes in workforce development, child and family well-being, public health, and conservation, most recently as the Pew Charitable Trusts’ vice president of research and science. She spent over 10 years in the federal government in the Department of Labor (DOL), where she served as the chief evaluation officer, and in the Administration for Children and Families. She has also overseen major initiatives in state and local government and academia.