• Obradović, Sandra, School of Psychology and Counselling, The Open University, Milton Keynes, United Kingdom
• Ochoa, Danielle P., Department of Psychology, University of the Philippines Diliman, Quezon City, Philippines
• Okai, Jemima A. O., School of Public Service and Governance, Ghana Institute of Management and Public Administration, Accra, Ghana
• Oliver, Emily, British Red Cross, London, United Kingdom
• Ong, Michelle G., Department of Psychology, University of the Philippines Diliman, Quezon City, Philippines
• Orian Harel, Tal, Department of Communication, The Hebrew University of Jerusalem, Jerusalem, Israel; The Truman Institute for the Advancement of Peace, The Hebrew University of Jerusalem, Jerusalem, Israel
• Osbourne, Lateesha, Department of Psychology, University of Bath, Bath, United Kingdom
• Osei-Tutu, Annabella, Department of Psychology, University of Ghana, Accra, Ghana
• Ottati, Victor C., Department of Psychology, Loyola University Chicago, Chicago, IL, USA
• Owuamalam, Chuma Kevin, School of Psychology, University of Nottingham, Selangor Darul Ehsan, Malaysia
• O’Dwyer, Emma, Department of Psychology, Kingston University, London, United Kingdom
• O’Dwyer, Emma, Institute of Lifecourse Development, University of Greenwich, London, United Kingdom