1. Arousal and reinforcement;Berlyne,1967
2. Reinforcers and reinforcement: Their relation to maze performance;Bevan;J. exp. Psychol.,1960
3. Neuropsychological interpretation on general activity and instrumental behavior;Bindra;Psychol. Rev.,1968
4. Instrumental conditioning of jugular self-infusion in the rhesus monkey;Clark;Science,1961
5. The association of neutral objects with rewards: Effects of continuous versus partial reward;Duchowski,1968