• Karagiannopoulou, Evangelia, Department of Philosophy, Education and Psychology, University of Ioannina, Ioannina, Greece
• Karagiannopoulou, Evangelia, Department of Philosophy, Pedagogy and Psychology, Section Psychology, University of Ioannina, Ioannina, Greece
• Kareshki, Hossein, Department of Education and Psychology, Ferdowsi University of Mashhad, Mashhad, Iran
• Karim, Jahanvash, CERGAM, IAE d’Aix-en-Provence, France
• Karl, Johannes, Dublin City University, Dublin, Ireland
• Karunarathne, Rotumba A. I. C., Department of Human Resource Management, Faculty of Commerce and Management Studies, University of Kelaniya, Dalugama, Sri Lanka
• Karwowski, Maciej, University of Wrocław, Wrocław, Poland
• Karwowski, Maciej, Creative Education Lab, Academy of Special Education (Poland)
• Kaspar, Kai, Institute of Psychology, University of Osnabrück, Osnabrück, Germany; Institute of Cognitive Science, University of Osnabrück, Osnabrück, Germany
• Kastrup, Bernardo, Independent Scholar, Veldhoven, The Netherlands
• Katerelos, Theodora E., University of Quebec in Montreal, Quebec, Canada
• Kateri, Evangelia, Department of Psychology, University of Crete, Rethymno, Greece
• Katz, Gary S., California State University, Northridge
• Kaufman, James C., University of Connecticut, Storrs, CT, USA
• Kaufmann, Marlen, The Institute for Work and Health of the German Social Accident Insurance, Dresden, Germany
• Kay-Lambkin, Frances, University of Newcastle, Newcastle, Australia; NHMRC Centre for Research Excellence in Mental Health & Substance Abuse, Macquarie University, Sydney, Australia; Hunter Medical Research Institute, Newcastle, Australia; Centre for Brain and Mental Health Priority Research Centre, University of Newcastle, Newcastle, Australia; Society for Mental Health Research, Victoria, Australia; International Society for Research on Internet Interventions, Sanford, NC, USA
• Kayis, Ahmet Rifat, Department of Psychological Counselling and Guidance, Anadolu University, Eskisehir, Turkey
• Kazarian, Shahe S., American University of Beirut
• Kazemi, Ali, School of Health and Education, University of Skövde, Skövde, Sweden
• Keijsers, Ger P. J., Behavioural Science Institute, Radboud University, Nijmegen, the Netherlands; Clinical Psychological Science, Maastricht University, Maastricht, the Netherlands
• Kelley, James L., Independent Researcher, Norman, OK, USA
• Kerwer, Martin, Leibniz Institute for Psychology (ZPID), Trier, Germany
• Keturakis, Viktoras, Department of General and Educational Psychology, Vilnius University, Vilnius, Lithuania
• Keyes, Corey Lee M., Emory University, Atlanta, GA, USA
• Khan, Roxanne, School of Psychology, University of Central Lancashire, Preston, United Kingdom
• Kharas, Mark W., Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Sciences, NTNU Norwegian University of Science and Technology, Trondheim, Norway
• Khetrapal, Neha, Centre for Behavioural and Cognitive Sciences University of Allahabad, Allahabad, India
• Khokhar, C. P., Professor, Department of Psychology, Gurukul Kangri University, Haridwar, India
• Khoshkam, Samira, University of Isfahan, Isfahan
• Kielkiewicz, Krzysztof, All Hallows College, Ireland
• Kirsh, Gillian A., University of Western Ontario
• Kizilhan, Jan Ilhan, Cooperative State University BW, Villingen-Schwennigen, Germany
• Kizilhan, Jan Ilhan, University of Freiburg
• Kizilhan, Jan Ilhan, Institute for Psychology, Department of Rehabilitation Psychology and Psychotherapy, Workgroup Migration and Rehabilitation, University of Freiburg Baden-Württemberg Cooperative State University, Villingen-Schwennigen (Germany)
• Klanjšek, Rudi, University of Maribor, Department of Sociology
• Klein, Dana, Department of Psychology, University of Western Ontario, London, Ontario, Canada
• Klein, Olivier, Faculty of Psychology and Education, University Libre de Bruxelles, Bruxelles, Belgium
• Klik, Kathleen A., Department of Psychology, University of South Carolina, Sumter, SC, USA
• Klussman, Kristine, Connection Lab, San Francisco, CA, USA
• Kokkinaki, Theano, Department of Psychology, University of Crete, Rethymnon, Greece
• Kolovelonis, Athanasios, Department of Physical Education and Sport Science, University of Thessaly, Trikala, Greece
• Korstanje, Maximiliano E., University John F. Kennedy
• Korstanje, Maximiliano E., University of Moron Argentina
• Koschmieder, Corinna, Department of Differential Psychology, University of Graz, Graz, Austria
• Kostoulas-Makrakis, Nelly
• Kostovičová, Lenka, Institute of Applied Psychology, Faculty of Social and Economic Sciences, Comenius University, Bratislava, Slovakia
• Kotlyar, Igor, Faculty of Business and IT, University of Ontario Institute of Technology, Oshawa, Canada
• Koutra, Katerina, University of Crete, Rethymno, 74100, Greece
• Kovac, Velibor Bobo, University of Agder, Kristiansand
• Kováčová Holevová, Bibiána, Department of Psychology, Pavol Jozef Šafárik University, Košice, Slovakia