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Robin Koralek is a seasoned evaluator and project director with over 30 years of experience in evaluating federal and state social welfare programs. Her expertise spans areas such as food assistance, employment and training cash assistance, and barriers to employment, including for those recovering from substance use disorders. She has worked with various governmental and non-profit organizations, focusing on program design, implementation, and outcomes.

Allan Porowski joined the Social and Economic Policy Division of Abt Global in 2014 as a principal associate. He is a leading expert in the design, execution and analysis of randomized controlled trials, quasi-experimental studies and national cross-site evaluations of education, health and other social interventions.

Julio Pacca is a psychologist and innovative leader with more than 20 years of experience in health care. He focuses on HIV and AIDS; maternal health; adolescent health; and health systems strengthening. Pacca has worked with donors such as the US Agency for International Development (USAID), the Centers for Disease Control and Prevention, the United Nations, the World Bank, bi-lateral Scandinavian donors, and the William and Flora Hewlett, Goldman, and Bill and Melinda Gates foundations.

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.

Brooke Abrams is a trained political scientist and researcher. With over 11 years of experience, she specializes in applied housing and health, bringing expertise in managing and contributing to place-based, mixed-method, and community-centered solutions. Her work spans research, evaluation, and technical assistance (TA) projects across diverse policy domains, delivering innovative and tailored strategies to drive impactful change.As a Client Solutions Architect at Abt, Abrams plays a pivotal role in designing client-focused frameworks and solutions that emphasize rigorous, data-informed, multi-disciplinary, and population-tailored design. She specializes in community-specific, monitoring, evaluation, and technical assistance approaches to engage and work alongside persons with lived expertise.

Clark Abt, an engineer, environmentalist, entrepreneur, educator and social scientist, is the founder and past president of Abt Global Inc. He served as Abt’s President from 1965 to 1985, Chairman of the Board of Directors from 1986 to 2005, and was then elected Chairman Emeritus. He is the author of 10 books on social and economic policies and advanced technologies, as well as many articles.Clark Abt was born in Cologne, Germany, in 1929, and came to the United States in 1937. He entered the Massachusetts Institute of Technology as a freshman in aeronautical engineering in 1947 and graduated with a bachelor's degree in general engineering in 1951. He then served four months in the Merchant Marine as an ordinary seaman, followed by a year at Johns Hopkins University as an English instructor, obtaining an M.A. from the Department of Writing, Speech and Drama for this master thesis, “A Year of Poems.”

Geoff Scahill has over 20 years of experience working in and managing international development programs. He has worked extensively within Papua New Guinea (PNG) and the Pacific – predominantly in Indonesia, Fiji, Samoa, and the Solomon Islands. He brings a long history as a health sector professional and has held roles as a health management advisor and health systems adviser in Pacific Island Countries. Geoff draws on his background in finance and economics to work with counterparts to increase efficiencies within the programs Abt Global delivers.

Patrick Ransom is an environmental engineer and certified cost estimator with more than 30 years of experience evaluating environmental technologies, policies, and regulatory costs. 

Laura Blake has more than 20 years of experience in leading scientific programs and research in the environmental science and policy domain. She has deep expertise in surface water quality restoration and protection and has spent her career designing and implementing scientific studies to support efforts to protect human health and aquatic environments. She has significant knowledge of Clean Water Act rules and regulations and has extensive experience supporting federal and state regulatory programs with implementation of and compliance with the federal Clean Water Act.

Marianne El-Khoury is a seasoned health professional with a proven track record of leading and managing large-scale health programs. At Abt, she has held senior management and technical roles on USG-funded projects in health systems strengthening, infectious diseases, and private sector health. She has also led research and evaluation studies in family planning and reproductive health, maternal and child health, and health financing.