Welcome to "Without Conscience"
Robert Hare's Web Site devoted to the study of Psychopathy


News and Quick Links:

  • Upcoming PCL-R Workshops:

    • June 3-4, 2019: Vadnais Heights, MN (with Dr. Adelle Forth & Dr. David Kosson)

    • October 3-4, 2019: WEBINAR: Psychopathy Checklist-Revised Workshop (Dr. Hare & Dr. J. Reid Meloy)

  • Misattribution of PCL-R Authorship:

    Recently, more than 20 articles, chapters, theses, and presentations have used a variation of the following citation for the Hare PCL-R: Hare, R. D., & Vertommen, H. (1991). The Hare Psychopathy Checklist-Revised. Multi-Health Systems. In some cases reference is to the 2003 edition of the PCL-R, and in other cases the reference omits the location of the publisher. Vertommen is not a co-author of the PCL-R. He is senior author of the Dutch translation of the PCL-R.

    One author said the mistake was due to the use of an "automatic citation management software" program. If any reader of this note has used such a program and can help to determine the origin of this misattribution, please contact me. I would be most appreciative.

    The correct citation for the PCL-R is Hare, R. D. (2003). The Hare Psychopathy Checklist-Revised, 2nd edition. Toronto, ON: Multi-Health Systems.

    MHS Translations:

    To inquire about existing translations, to translate an MHS assessment, or to obtain permission to reproduce MHS copyrighted material please contact permissions@mhs.com for further information.

  • In the Webometrics Ranking of World Universities (2019), Dr. Hare is among the world's 3160 most highly cited researchers (h-index>100) according to their Google Scholar Citations public profiles. His h-index was 108, the number of publications with at least 108 citations (total citations = 53,110). http://www.webometrics.info/en/hlargerthan100

    The data for this 2019 edition [were] collected during the first week of October 2018 of a BETA list of the public profiles of the most highly cited researchers (h-index larger than 100) according to their declared presence in the Google Scholar Citations database. The list...includes both living and deceased authors."

    In March 19, 2019, Google Scholar listed him as having an h-index of 109, with 56,113 citations.

  • Michael McCaul says 1 in 100 people is a sociopath. From Politifact Texas by W. Gardner Selby, March 2018.

  • Now Available! the Hare Self-Report Psychopathy Scale (SRP-4); Published by Multi-Health Systems.

  • Robert Hare was named to the Order of Canada, one of Canada's highest civilian honours. The Order of Canada recognizes a lifetime of achievement and contribution to society, and was presented by the Governor General of Canada.

  • This Charming Psychopath: How to Spot Social Predators Before They Attack - An excerpt from Dr. Hare's Without Conscience, published by Psychology Today.

  • Aftermath: Surviving Psychopathy: an organization established to be of assistance to people who are or have been in relationships with individuals with psychopathic features.

  • Society for the Scientific Study of Psychopathy (SSSP): a non-profit, professional organization which was developed to promote the conduct and communication of scientific research in the field of psychopathy and to encourage education and training in those fields of science that contribute to research in psychopathy.

Special Links for Psychopathy and Law Enforcement:

Featured Manuals, Books and Articles:

Meloy, J. R., Book, A., Hosker-Field, A., Methot-Jones, T., & Roters, J. (2018). Social, sexual, and violent predation: Are psychopathic traits evolutionarily adaptive? Violence and Gender, 5(3), 153-165. doi:10.1089/vio.2018.0012 [Download PDF]

Hare, R. D. (2013). Forward to Handbook on Psychopathy and Law. In K. A. Kiehl & W. P. Sinnott-Armstrong (Eds.), Handbook on Psychopathy and Law, (pp. vii-ix). New York: Oxford University Press. [Download PDF]

Lilienfeld, S. O., Watts, A. L., Smith, S. F., Patrick, C. J., & Hare, R. D. (2018, August 6). Hervey Cleckley (1903–1984): Contributions to the study of psychopathy. Personality Disorders: Theory, Research, and Treatment. Advance online publication. [Download PDF]

Guay, J.-P., Knight, R. A., Ruscio, J., & Hare, R. D. (2018). A taxometric investigation of psychopathy in women. Psychiatry Research, 261, 565-573.

Krstic, S., Neumann, C. S., Roy, S., Robertson, C., Knight, R. A., & Hare, R. D. (2017). Using latent variable- and person-centered approaches to examine the role of psychopathic traits in sex offenders. Personality Disorders: Theory, Research, and Treatment. Accepted for publication. [Download PDF]

Hare, R. D. (2017). Commentary: A person-centered approach to research on the nature and meaning of psychopath-brain relations. Biological Psychiatry: Cognitive Neuroscience and Neuroimaging, 2(2), 111-112. doi:10.1016/j.bpsc.2017.01.007 [Download PDF]

Hare, R. D. (2016). Psychopathy, the PCL-R, and criminal Justice: Some new findings and current issues. Canadian Psychology, 57(1), 21-34. doi:10.1037/cap0000041 [Download PDF]

Important new research by Randy Salekin argues persuasively that, "Callous–unemotional traits have been incorporated into the DSM-5 and may be considered for the ICD-11. Despite the centrality of callous–unemotional traits, it is only one of three dimensions of child psychopathy. It is proposed that the grandiose–manipulative and daring–impulsive traits should be considered and potentially accepted as specifiers for conduct disorder in the DSM-5 and ICD-11." The full reference for this research is:

Salekin, R. (2016). Psychopathy in childhood: why should we care about grandiose–manipulative and daring–impulsive traits? British Journal of Psychiatry, 209, 189-191. doi:10.1192/bjp.bp.115.179051. [Download PDF]

Gacono, C. B. (Ed.). (2016). The clinical and forensic assessment of psychopathy: A practitioner's guide (2nd ed.). New York, NY: Routledge.

Hare, R. D. (2016). Forward. In C. B. Gacono (Ed.), The clinical and forensic assessment of psychopathy: A practitioner's guide (2nd ed.). New York, NY: Routledge. [Download PDF]

Patrick, C. J. (Ed.). (2018). Handbook of psychopathy, 2nd edition. New York, NY: Guilford Press.

Glenn, A. L., & Raine, A. (2014). Psychopathy: An introduction to biological findings and their implications. New York, NY: NYU Press.

Haycock, D. (2014). Murderous minds. New York, NY: Pegasus Books.

Kiehl, K. (2014). The psychopath whisperer. New York, NY: Crown Publishing.

Hare, R. D. (2013). Forward. In K. A. Kiehl & W. P. Sinnott-Armstrong (Eds.), Handbook on psychopathy and law. New York, NY: Oxford University Press. [Download PDF]

Kiehl, K. A., & Sinnott-Armstrong, W. P. (Eds.). (2013). Handbook on psychopathy and law. New York, NY: Oxford University Press.

FBI. (2012). FBI Law Enforcement Bulletin: Special issue on psychopathy. Quantico, VA: Author. [full text]

Häkkänen-Nyholm, H., & Nyholm, J.-O. (Eds.). (2012). Psychopathy and law: A practitioner's guide. Oxford, UK: Wiley-Blackwell.

Hare, R. D. (2012). Introduction to the special issue: Focus on psychopathy. FBI Law Enforcement Bulletin, July. Available online at https://leb.fbi.gov/file-repository/archives/leb-july-2012.pdf/view

Lawrence, P. R. (2010). Driven to lead: Good, bad, and misguided leadership. New York, NY: Wiley.

Malatesti, L., & McMillan, J. (Eds.). (2010). Responsibility and psychopathy: Interfacing law, psychiatry and philosophy. Oxford, UK: Oxford University Press.

Salekin, R. T., & Lynam, D. R. (Eds.) (2010). Handbook of child and adolescent psychopathy. New York, NY: Guilford Press.

Felthous, A. R., & Saß, H. (Eds.). (2008). International handbook on psychopathic disorders and the law. Chichester, UK: Wiley.

Hare, R. D., & Neumann, C. S. (2008). Psychopathy as a clinical and empirical construct. Annual Review of Clinical Psychology, 4, 217-246. doi: 10.1146/annurev.clinpsy.3.022806.091452 [Download PDF]

St-Yves, M., & Tanguay, M. (2008). Psychology of criminal investigation: The search for the truth. Toronto, ON: Carswell. (Includes a chapter by Dr. M. Logan & Dr. R. D. Hare entitled "Criminal psychopathy: An introduction for police".)

Hervé, H., & Yuille, J. (Eds.). (2007). The psychopath: Theory, research, and practice. Mahwah, NJ: Routledge.

Babiak, P., & Hare, R. D. (2006). Snakes in suits: When psychopaths go to work. New York, NY: ReganBooks.

Patrick, C. J. (Ed.). (2006). Handbook of psychopathy. New York, NY: Guilford Press.

Forth, A. E., Kosson, D. & Hare, R. D. (2003). The Hare PCL: Youth Version. Toronto, ON: Multi-Health Systems.

Hare, R. D. (2003). Hare PCL-R 2nd Edition. Toronto, ON: Multi-Health Systems.

    Available translations of the PCL-R (1991 version):
    Bulgarian - Available from MHS via license to copy only
    Dutch (Manual and forms) - Available from Pearson Netherlands (no longer available)
    Finnish - Available from MHS via license to copy only
    French (PQ) (all Forms and Manuals) - Available from MHS - 1-800-456-3003
    Korean(QuikScore Form, Interview Guide) - Available from MHS via license to copy only
    Portuguese (Brazil) (Manual, Interview Guide, Percentile Tables) - Available from MHS (1-800-456-3003) or Casa do Psicólogo
    Spanish (Chile) (Interview guide, rating criteria) - Available MHS via license to copy only
    Spanish (Euro) (Interview guide, score sheet) - Available MHS via license to copy only

    Available translations of the PCL-R 2nd Edition:
    Danish (Interview guide, scoring booklet and scoring guide) - Available from Hogrefe Psykologisk Forlag
    German (Manual, Interview Guide, Score Sheet) - Available from Testzentrale
    Hebrew (all forms and Manual) - Available from PsychTech Ltd
    Italian (Manual, Item Booklet, Interview Schedule, QuikScore form) - Available from Giunti O.S.
    Japanese - Available from Kaneko Shobo Co. Ltd.
    Korean - Available from Hakjisa Publisher
    Spanish - Available from Tea Ediciones
    Swedish (all forms) - Available from PSYKOLOGIFORLAGET AB or email info@hogrefe.se

Frick, P., & Hare, R. D. (2001). The Antisocial Processes Screening Device. Toronto, ON: Multi-Health Systems.

Meloy, J. R. (Ed.). (2001). The mark of Cain: Psychoanalytic insight and the psychopath. Hillsdale, NJ: Analytic Press. Republished in 2014 by Routledge.

Hare, R. D., & Hervé, H. (1999). The Hare P-Scan Research Version. Toronto, ON: Multi-Health Systems.

Hare, R. D. (1998). Without conscience: The disturbing world of the psychopaths among us. New York, NY: Guilford Press.
    Translations of Without Conscience:
    Chinese Complex

Hart, S. D., Cox, D. N., & Hare, R. D. (1995). Manual for the Psychopathy Checklist: Screening Version (PCL:SV). Toronto, ON: Multi-Health Systems.

Meloy, J. R. (1988). The psychopathic mind: Origins, dynamics, and treatment. Lanham, MD: Jason Aronson, Inc.

Last update: July 18, 2018