1. Manual of the Eysenck Personality Inventory;Eysenck,1964
2. Personality structure and measurement;Eysenck,1969
3. The three arousal model: Implications of Gray's two factor learning theory for heart rate, electrodermal activity and psychopathy;Fowles;Psychophysiology,1980
4. The psychophysiological basis of introversion-extraversion;Gray;Behaviour Research and Therapy,1970
5. Causal theories of personality and how to test them;Gray,1973