1. Af Klinteberg, B., Humble, K., & Schalling, D. (1992). Personality and psychopathy of males with a history of early criminal behaviour. European Journal of Personality, 6, 245–266.
2. Alterman, A. I., Cacciola, J. S., & Rutherford, M. J. (1993). Reliability of the Revised Psychopathy Checklist in substance abuse patients. Psychological Assessment, 5, 442–448.
3. American Psychiatric Association. (1987). Diagnostic and statistical manual of mental disorders. (3 Revised ed.). Washington DC: American Psychiatric Association.
4. American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders. (4th ed.). Washington: American Psychiatric Association.
5. Armor, D. J. (1969). Theta reliability and factor scaling. Sociological Methodology, 2, 17–50.