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Sandra Wilson is an internationally known expert in research synthesis and meta-analysis. She has conducted systematic reviews of educational programs, most notably on school-based violence prevention and high school dropout programs.Prior to joining Abt, Wilson was the associate director of the Peabody Research Institute and a research assistant professor at Vanderbilt University. Wilson led and supported research projects at the Center for Evaluation Research and Methodology at Vanderbilt.

Graham Teskey leads Abt Global’s Global Governance practice out of Canberra, Australia. He has 40 years of experience in governance and international development. He has worked with (and for) for the U.K.’s Department for International Development, (the forerunner to the Foreign, Commonwealth and Development Office), the World Bank, and Australia’s Department of Foreign Affairs and Trade. Graham has lived and worked in multiple countries, including Kenya, Tanzania, Uganda, Rwanda, Zambia, Zimbabwe, Malawi, Fiji, Vanuatu, Indonesia, Papua New Guinea, Solomon Islands, Philippines, and Timor-Leste.

Lauren Olsho is a senior health economist and evaluator with expertise in random assignment, quasi-experimental evaluation methods, economic modeling methodology, and advanced statistical and econometric analysis.Olsho’s primary research interests are in health, nutrition and health behaviors in vulnerable populations – including the elderly, the poor, program participants, minorities, arrestees and at-risk youth.Olsho recently served as principal investigator on a cluster random assignment evaluation of the Agency for Healthcare Research & Quality On-Time Falls Prevention Initiative, a clinical decision support intervention to reduce falls in long-term care settings.

Debra Kemp Fleischer is a certified Project Management Professional (PMP) with 25 years of experience supporting federal programs. She applies her background in environmental science and policy with communications expertise to inform and engage stakeholders about regulatory and voluntary programs. She has led the development and implementation of multi-media communications strategies for a variety of audiences, including non-profit organizations, industry, environmental groups, and federal staff. She has experience with plain language writing, message development, and risk communication. 

Jessen Carroll is a human resources (HR) professional with more than 20 years of experience overseeing all aspects of HR, organizational communications, governance, and administration functions. She has experience leading organizational integrations and change management efforts. She also has operations management, business analysis, business process improvement, and project management experience. She can balance tactical day-to-day operational needs with a strategic grasp of long-term business objectives. 

Diane Paulsell is an applied social scientist with more than 20 years of experience designing, conducting, and overseeing mixed-methods policy-focused research, including national multi-site studies. She has also led rapid cycle learning and program improvement efforts with a variety of human services programs and a foundation-funded research program on family supportive services. Her areas of expertise range from early care and education to parenting, family engagement, youth development and family supportive policies and programs, including nutrition.

In his career as a senior finance and operations executive, Rehberger most recently served as the Senior Vice President, Chief Financial Officer of Engility, a Virginia-based government contractor.  He held similar positions with TASC from 2010 until its merger with Engility in 2015.  Rehberger helped guide both companies as the government industry cycled through a severe downturn and recovery, counseling the Board of Directors regarding strategy, enterprise risk management, cyber security, and compensation.  He previously held executive positions with telecommunications firms XO Communications and MCI. In 2017, Virginia Business awarded Rehberger the Virginia CFO of the Year award for his outstanding commitment to financial stewardship and dedication to the success of Engility.

Gerald Adolph is an expert in growth strategy, acquisition strategy and merger integration planning for corporate and mission driven organizations. He led the Global Mergers & Restructuring Practice and was elected senior partner over a 35-year career with Booz Allen Hamilton and its successor strategy companies.Adolph was one of the lead practitioners and developers of Booz's very successful capabilities-driven approach to strategy.  During his consulting career he has primarily focused on assisting clients with growth strategies, new business development, innovation strategy and business redefinition. He often works with companies/entities undergoing very significant industry disruption.

René Nutter is an experienced leader with more than two decades of  history with developing and operating government contracts. She’s also worked with the private sector and foundational work with organizations such as Yale, Harvard, and the Gates Foundation.

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.