Joel’s work focuses on analysing the cost-effectiveness of different ways that charities can help people. His meta-analysis of the impact of cash transfers on subjective wellbeing and mental health (coauthored with Kaiser and Bach-Mortensen) was published in Nature Human Behaviour. Joel has a Masters in Economics and Data Science from the University of Oklahoma, graduating top of his class.

Samuel researches the cost-effectiveness of different interventions in terms of subjective wellbeing. His research interests include the strengths and flaws of different research methodologies, causality, and decision-making. Samuel has a Masters in Cognitive and Decision Sciences from University College London, gaining a distinction.

Rachel has 12 years of experience leading operations and financial management for non-profits in South Africa. She has worked with a small start-up focused on business management education, a medium-sized company focused on the prevention of HIV, and a pan-African organisation providing data journalism to foster civic engagement. Originally from the United States, Rachel has been living in Cape Town since 2010. She has a BS in Finance & Marketing and was a Fellow with LGT Venture Philanthropy.

Barry has advised HLI on communications since 2018 and joined the team full-time in 2021. He previously worked on the events team at the Centre for Effective Altruism, organising EA Global and EAGx conferences. Barry has worked in a wide range of communications roles across the public, private and non-profit sectors for over 13 years. He holds a BA in Social Sciences and a CIPR Diploma in Public Relations.

Sam is a Research Scientist at BetterUp. She earned her PhD in Clinical Psychology from the University of Massachusetts Amherst and completed a postdoctoral fellowship at Harvard University. Before joining BetterUp, she was a Clinical Research Scientist at Happify Health and a management consultant at Boston Consulting Group.

Caspar is a Research Fellow at the Wellbeing Research Centre and a Research Officer at the Institute for New Economic Thinking where he completed his DPhil in Social Policy in December 2020. His research focuses on the measurement and determinants of wellbeing.

Julian is a behavioural development economist with a particular focus on health and welfare analysis. He is currently Professor of Economics at the University of Exeter and works with the World Bank and multiple governments around the world.

Karolina is the co-founder and Director of Programs at Charity Entrepreneurship. She also serves as a fund manager for the Effective Altruism Animal Welfare Fund and a board member and advisor for various effective altruism non-profits.

Peter is the Ira W. DeCamp Professor of Bioethics at Princeton University. He works on practical ethics, and is best known for the book Animal Liberation and his writings about global poverty.

Tatjana is a philosopher specialising in ethics and political philosophy. She is currently based in the Department of Philosophy and Economics at the University of Bayreuth.