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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.

Sarah Dunn, an experienced international developme nt leader, is Managing Director of Abt Britain.  She is responsible for driving the UK growth strategy as well as leading and mentoring our UK home office and Program teams to deliver against Abt’s mission. Dunn spent nearly two decades as a senior executive with the Department for International Development (now Foreign, Commonwealth & Development Office), where her final role in 2014 was country director for DFID Southern Africa/South Africa.  While at DFID, she worked across Africa, the Middle East and Caribbean and held several other executive and strategic advisory positions, including head of trade policy.

Shelly Spoeth brings more than 25 years of strategic communication and social marketing experience to tackling complex health and social issues.  She  worked for a decade with pharmaceutical and biotechnology clients while at public relations firms including Ketchum, FleishmanHillard and Cohn & Wolfe. She then worked as a consultant for government and nonprofit clients, including the Centers for Disease Control and Prevention (CDC), on behavioral change challenges ranging from HIV/AIDS to COVID-19. Spoeth has implemented, evaluated, and managed dozens of projects that improved health outcomes. Her capabilities include formative research and digital outreach.

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.

Roslyn M. Brock, a nationally recognized civil rights, health policy, and advocate, is Abt Global’s Chief Global Engagement Officer.  Brock is Chairman Emeritus of the National Board of Directors for the National Association for the Advancement of Colored People (NAACP).  She was the youngest person ever elected NAACP chairman and the fourth woman to hold the position.

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.