1. Relationship between circadian rhythm of body temperature and introversion-extraversion;Blake;Nature,1967
2. Individual differences in drug response;Claridge,1974
3. Human Circadian Rhythms;Conroy,1970
4. Eysenck Personality Inventory;Eysenck,1963
5. The nature of diurnal variations in performance and their implications for shift work studies;Folkard,1975