1. Barrett P.T. (1973) Personal communication, October.
2. Personality factors in the Eysenck Personality Questionnaire;Barrett;Person. individ. Diff.,1980
3. The location of superfactors P, E and N within an unexplored personality factor space;Barrett;Person. individ. Diff.,1980
4. The observation to variable ratio in factor analyses;Barrett;Person. Stud. Gp Behav.,1980
5. Radial parcel factor analysis;Barrett;Person. individ. Diff.,1981