Hare, R. D., Harpur, T. J., Hakstian, A. R., Forth, A. E., Hart, S. D., & Newman, J. P. (1990). The revised Psychopathy Checklist: Reliability and factor structure.
Psychological Assessment: A Journal of Consulting and Clinical Psychology, 2(3), 338–341.
https://psycnet.apa.org/doi/10.1037/1040-3590.2.3.338Lilienfeld, S. O., & Andrews, B. P. (1996). Development and preliminary validation of a self-report measure of psychopathic personality traits in noncriminal population.
Journal of personality assessment, 66(3), 488-524.
https://doi.org/10.1207/s15327752jpa6603_3Levenson, M. R., Kiehl, K. A., & Fitzpatrick, C. M. (1995). Assessing psychopathic attributes in a noninstitutionalized population.
Journal of personality and social psychology, 68(1), 151–158.
https://doi.org/10.1037//0022-3514.68.1.151