The Biological Basis of Personality Author:H. J. Eysenck The Biological Basis of Personality represents Eysenck’s third phase of study, when he dug deeper to find biological causes underlying the psychological concepts of emotion, excitation, and inhibition – which had formed the building blocks of his earlier efforts. In this work, the causal links he postulates between personality variables and neur... more »ological and physiological discoveries establish a realistic model that takes theory out of the field of mere speculation.« less