- Open University (3)
- Annett, John (2)
- James, William, 1842-1910 (2)
- Morris, P. E. (Peter Edwin), 1947- (2)
- Vygotskiĭ, L. S. (Lev Semenovich), 1896-1934 (2)
- Adler, Mortimer Jerome, 1902- (1)
- Blum, Milton L., 1912- (1)
- Bowers, Fredson Thayer, 1905-1991 (1)
- Burkhardt, Frederick, 1912- (1)
- Butler, Gillian (1)
- Buxton, Claude E. (1)
- Chein, Isidor (1)
- Crutchfield, Richard S. (1)
- Díaz-Guerrero, Rogelio (1)
- Encyclopaedia Britannica (1)
- Galanter, Eugene (1)
- Hilgard, Ernest Ropiequet, 1904- (1)
- Holloway, Clive (1)
- Holtzman, Wayne H. (1)
- Hutt, Max L. (1)
- International Congress of Psychology (1)
- International Union of Psychological Science (1)
- Isaacson, Robert Lee, 1928- (1)
- Krech, David (1)
- Livson, Norman, 1924- (1)
- Lurii︠a︡, A. R. (Aleksandr Romanovich), 1902-1977 (1)
- McManus, Freda (1)
- Miller, Paul R. (1)
- Munn, Norman Leslie, 1902- (1)
- Rieber, R. W. (Robert W.) (1)
- Rollin, Robert A. (1)
- Rosenzweig, Mark R. (1)
- Skrupskelis, Ignas K., 1938- (1)
- Smedslund, Jan (1)
- Staats, Arthur W. (1)
- Staats, Carolyn K. (1)
- Sánchez-Sosa, Juan José (1)
- Wilson, William A., Jr. (1)