r
    Judd, Charles H.
    Jung, Carl
    
   К
    
    Kagan, Jerome
    Kamiya, Joe
    Kant, Immanuel
    Kantor, Jacob R.
    Katona, George
    Katz, David
    Kelley, Harold H.
    Kellogg, Winthrop N.
    Kelly, George A.
    Kelly, Lowell E.
    Kerekjarto, Margit
    Kierkegaard, Soren A.
    Kiesow, Federico
    Kinsey, Alfred C.
    Klages, Ludwig
    Klineberg, Otto
    Klopfer, Bruno
    Koffka, Kurt
    Kohlberg, Lawrence
    Konorski, Jerzy
    Kornadt, Hans-Joachim
    Kraepelin, Emil
    Krafft-Ebing, Richard von
    Kretschmer, Ernst
    Kohler, Wolfgang
    
   L
    
    La Mettrie, Julien Offroy de
    labor-management relations
    Ladd, George Trumbull
    Ladd-Franklin, Christine
    Lamarck, Jean-Baptiste de Monet de
    Lashley, Karl
    lateral postero-orbital frontal cortex
    Lazarus, Arnold Allan
    Lazarus, Richard S.
    Le Bon, Gustave
    Leary interpersonal checklist
    Lee, Chang-Ho
    Leibnitz, Gottfried Wilhelm
    Leontiev A. N.
    Lerner, Arthur
    Lewin, Kurt
    local determination
    Locke, John
    Loeb, Jacques
    long-term potentiation
    Lorenz, Konrad
    Lorge formula
    Lotze, Hermann
    ludis
    Lundin, Robert W.
    
   M
    
    Muller, Johannes
    Munsterberg, Hugo
    Mach, Ernst
    Magendie, Frangois
    Maimonides, Moses
    mainstreaming (psychotics)
    Makarenko A. S.
    Malebranche, Nicolas de
    mania
    Marx, Karl Heinrich
    Maslow, Abraham H.
    matched-sample experimental design
    May, Rollo
    maya
    McClelland, David C.
    Mcdougall, William
    McKeachie, Wilbert J.
    Mead, George H.
    meaning perception
    measurement
    mechanics of language
    meditation
    Meehl, Pau