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Researcher and policy analyst Karin Martinson has extensive knowledge of workforce development and income security policies affecting low-income populations.  With more than 30 years of experience, her research focuses on identifying effective strategies to assist disadvantaged groups seeking to gain a foothold in the labor market. The groups include low-skilled adults, cash-assistance recipients, the long-term unemployed, and those with disabilities or substance use disorders. She oversees Abt’s large portfolio of work at the U.S. Department of Labor and has worked with a wide range of federal and state agencies and philanthropic organizations.  She has led numerous research and evaluation projects, primarily in workforce and income support arena, as a project director, principal investigator, task leader, and content expert. She co-authored more than 50 research reports and briefs and contributed to published volumes on workforce policy. 

Hailu Zelelew is an economist with 30 years of experience in health financing/economics, health insurance, health policy processes, health systems strengthening and economic development. He has worked on development planning and economic cooperation; policy analysis and development; rural development; program design and management; maternal, newborn and child health; family planning and reproductive health; HIV/AIDS; and capacity building. His financial expertise includes health program costing, resource tracking, health financing policy, health insurance, public financial management, and governance. He also has extensive experience with monitoring, evaluation and research.

Elizabeth Giardino’s evaluation and technical assistance work on housing, community development, asset building, and government innovation policies and programs promotes more equitable access to 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 community-based participatory research and incorporating equitable approaches into technical assistance engagements.

Dr. Lianne Fisman is an experienced researcher and a recognized expert in qualitative and mixed method research design, and analysis. She specializes in evaluating and strengthening programs that support economically disadvantaged individuals and communities. Dr. Fisman currently leads Abt’s Qualitative and Mixed Methods sub-capability. During her tenure at Abt, Dr. Fisman has served as project director and task leader on projects related to a variety of policy areas, including housing, youth and community development, education, and financial wellness.

Dr. Jessica Thornton Walker is an accomplished researcher and the leader of Abt’s quantitative methods team who brings 20 years of experience designing and implementing policy-relevant research. She is a recognized expert in large-scale, multi-site evaluations to assess the impacts of social policies and programs in housing and homelessness, child welfare, adolescent risk-taking behaviors, and substance use.In her role as the Quantitative Methods Lead, Dr. Walker is responsible for the management, staffing, budgeting, solutioning, and strategy that guides the work of 120 quantitative research staff and ensures Abt provides high-quality technical delivery and innovative solutions tailored to clients.

Frank Divita has extensive experience in contract management, project management and technical support to the U.S. Environmental Protection Agency (EPA). Divita has more than 15 years of EPA experience performing and managing technical studies of air pollution issues, with a focus on the development of control strategies, emissions inventories, air quality, and control cost analyses for criteria, hazardous air pollutants and greenhouse gases. He has successfully managed seven multiyear support contracts and more than 120 work assignments under a variety of EPA Office of Air Quality Planning and Standards (OAQPS) contracts. He is the author of several technical documents to support OAQPS in their analyses of Clean Air Act requirements to perform Regulatory Impact Assessments for these rules.

Meghan Lynch, Sc.D., is an accomplished manager of cross-disciplinary teams, with 20 years of experience specializing in toxicology and human health risk assessment. She is skilled at interpreting, evaluating, and communicating toxicological and epidemiological information for hazardous substances. She has managed a variety of projects for ATSDR, OSHA, EPA, and nonprofit agencies. These include leading tasks requiring the synthesis of toxicological information and risk assessments, and performing both probabilistic and benchmark dose modeling. The results of these projects have been subject to peer review. Lynch has also provided memorandums and analyses supporting risk assessments and addressing industry comments, which have been used to support plaintiffs in litigation for chemical contaminants.

Dr. James White, a registered nurse and Collaborative Specialist in Global Health (CSGH), is a senior health specialist with a focus on infectious disease and global health security (GHS). He has over 20 years of experience that includes delivery of emergency response programs in emergency and fragile settings, pandemic preparedness and response, health systems strengthening, and public-private collaboration for GHS. White has worked in more than 20 countries in Africa, Asia, and Latin America assisting in both acute outbreak response and preparation for health emergencies. He also represents Abt as a technical expert on external GHS and pandemic preparedness working groups. His clients have included the U.S. Agency for International Development (USAID), the United Kingdom’s Foreign Commonwealth and Development Office (FCDO), and the Canadian International Development Association (CIDA) (now Global Affairs Canada).

René Nutter is the U.S. Food Security & Agriculture Client Account Lead. She has more than two decades of experience helping further food security and education in women and children. From studies with Yale, Harvard, and the Gates Foundation to a long and successful partnership with the USDA Food and Nutrition Services (FNS), she has led large data collection studies and evaluations, provided technical assistance, and helped train the next generation of researchers.

Dr. Fiona Mactaggart is a multi-disciplinary technical advisor with more than 10 years of experience in monitoring, evaluation, research, and learning (MERL); infectious disease control; and public health. As a co-lead of Abt's MERL portfolio, she draws on complexity theory and scientific methods to help clients test what works, discover why it works, and provide timely evidence-based recommendations to inform important decisions about policy and practice. Mactaggart contributes to business development, programme delivery, and thought leadership. She works in five key areas: monitoring (e.g., design of digital tools and visualisation platforms) research (e.g., cross-sectional survey design), evaluation methodologies (e.g., contribution analysis), learning (e.g., portfolio level evidence-informed strategic decision making), and cross-cutting MERL capabilities (e.g., adaptive management and GEDSI). Mactaggart has worked extensively in the Pacific and Southeast Asia.