1. The psychology of aggression;Buss,1961
2. The position of the response and the length of the response complex in verbal operant conditioning;Dixon,1962
3. The verb as a discriminative stimulus in verbal operant conditioning;Dixon,1962
4. Studies of the conditioning of verbal behavior;Krasner;Psychol. Bull.,1958
5. Need for approval and operant conditioning;Marlowe;J. consult. Psychol.,1962