Abstract
The chapter opens by questioning the role of personality traits in causing behaviour, and decides to work with the common assumption that they have an important role. There is an account of the search for the real units or traits of personality. Some of the traits and dispositions, selected for their particularly direct effect on belief, for example, strong need for closure, are briefly described. There is a comment on the way long-standing occupational roles can sometimes modify personality
Keywords: Belief, Personality, Raymond Cattell.