Photo of Adelle Forth

Adelle Forth

Professor

Degrees:Ph.D.
Phone:613-520-2600 x 1267
Email:Adelle.Forth@carleton.ca
Office:A519 Loeb Building

Biography

Adelle is a Professor in the Department of Psychology at Carleton University. She is the senior author of the Hare Psychopathy Checklist: Youth Version (Forth, Kosson, & Hare, 2003) and a co-author of the Structured Assessment of Violence Risk in Youth (Borum, Bartel, & Forth, 2003), a risk scale for predicting adolescent violence. She has also served as a consultant to the Federal Bureau of Investigations, Royal Canadian Mounted Police, the National Parole Board, Her Majesty’s Prison Service, the Pennsylvania Sex Offender Board, and has testified in various court proceedings on the construct of psychopathy.

Research Interests

Her research centers on the assessment and correlates of psychopathy in different populations, the emotional and cognitive processes that underlie psychopathy, and violence risk assessment. Her most recent research has focused on the impact of psychopathy. She has extensive experience training a wide variety of professionals on the administration, scoring, and use of psychopathy measures throughout North America, Europe, and Asia.

Recent Invited Addresses

Forth, A. E. (2021, June 14). Toxic relationships: The impact of psychopathy. Invited address at the Violence & Aggression Symposium (Virtual conference).

Forth, A. E. (2021, April 15). The impact of psychopathy: Implications for victim’s experiences. Keynote address at the Risk & Recovery Forensic Conference (Virtual conference).

Forth, A. E. (2020, February). Toxic relationships: The impact of psychopathy. Grand Rounds Ontario Shores Centre for Mental Health. Whitby, ON.

Forth, A. E. (2019, May). The impact of psychopathy. Presidential address at 8th Society for the Scientific Study of Psychopathy conference. Las Vegas, NV.

Forth, A. (October, 2018). Psychopathic traits in youth: Controversies and evidence. Colloquium to Department of Child and Youth Studies, Brock University. St. Catherine’s, ON.

Forth, A. E. (April, 2018). Psychopathy in youth: Critical concerns and expanding evidence. Invited address to Youth Justice and Interventions, Durham College. Whitby, ON.

Selected Publications

Karasavva, V., & Forth, A. (in press). Personality, attitudinal, and demographic predictors of non-consensual dissemination of intimate images. Journal of Interpersonal Violence.

Baglole, J. S., Tsang, S., Hare, R. D., & Forth, A. (in press). Psychopathic expression from early to late adulthood: An item response theory analysis of the Hare Psychopathy Checklist-Revised. Assessment.

De Brito, S., Forth, A. Baskin-Sommers, A., Brazil, I., Kimonis, E. R., Pardini, D. Frick, P., Blair, R. J. R & Viding, E. (2021). Psychopathy. Nature Reviews Disease Primer, 7(49).

Brazil, K., Dias, C., & Forth, A. (2021). Successful and selective exploitation in psychopathy: Convincing others and gaining trust. Personality and Individual Differences, 170, 1-10.

Humeny, C., Forth, A., & Logan, J. (2021). Psychopathic traits predict survivors’ experiences of domestic abuse. Personality and Individual Differences, 171.

Book, A., Stark, S., MacEachern, J., Forth, A., Visser, B., Wattam, T., Young J., Power, J., & Roters, J. (2020). In the eye of the beholder: Psychopathic traits and fear enjoyment. Journal of Personality, 88(6), 1286-1301.

Denomme, W. J., Curno, J., & Forth, A. (2020). Psychopathic traits, risk and protective factors, and attractiveness in forensic psychiatric patients: Their role in review board dispositions. Journal of Forensic Psychology Research and Practice, 20(3), 264-289.

Brazil, K., & Forth, A. E. (2020). Psychopathy and the induction of desire: Formulating and testing an evolutionary hypothesis. Evolutionary Psychological Science, 6, 64-81.

Ritchie, M., Blais., J. & Forth., A. (2019). “Evil” intentions: Examining the relationship between the Dark Tetrad and victim selection based on nonverbal gait cues. Personality and Individual Differences, 138, 126-132.

Forth, A., & Brazil, K. (2019). Psychopathy Checklist: Youth Version (PCL:YV). In R. D. Morgan (Ed.), The SAGE Encyclopedia of Criminal Psychology. Sage.

Forth, A., & Brazil, K. (2019). Psychopathy Checklist (PCL). In R. D. Morgan (Ed.), The SAGE Encyclopedia of Criminal Psychology. Sage.

Gillen, C., MacDougall, E. A. M., Forth, A. E., Barry, C. T., & Salekin, R. T. (2019). Validity of the Youth Psychopathic Traits Inventory-Short Version (YPI-S) in justice-involved and at-risk adolescents. Assessment, 26, 479-491.

Ritchie, M., Forth., A., Blais., J., & Book., A. (2018). Identifying vulnerability to violence: The role of psychopathy and gender. Journal of Criminal Psychology, 8, 125-137.

Ellingwood, H., Emeno, K., Bennell, C., Forth, A.E., Kosson, D., & Hare, R. (2017). Multidimensional scaling analysis of psychopathy in male juveniles using the PCL: YV. Journal of Criminal Psychology, 7, 262-279.

Blais, J., Forth, A., & Hare, R. (2017). Examining the interrater reliability of the Hare Psychopathy Checklist-Revised across a large sample of trained raters. Psychological Assessment, 29, 762-775.

Gillen, C., Bergstrom, H., & Forth, A. (2016). Individual differences and rating errors in first impressions of psychopathy. Evolutionary Psychology, 14(4), 1-7.

Churcher, F., Mills, J., & Forth, A. (2016). The predictive validity of the Two-Tiered Violence Risk Estimates Scale (TTV) in a long-term follow-up of violent offenders. Psychological Services, 13, 325-345.

Ritchie, M., & Forth, A. (2016). Without concern: Predicting personal-moral transgressions from psychopathy and gender. Personality and Individual Differences, 94, 247-252.

Forth, A. E., & Bergstrom, H., & Clark, H. (2016). Psychopathic traits in adolescence: Assessment and implications. In C. Gacono (Ed.). Clinical and forensic applications of psychopathy, 2nd edition. Earlbaum.

Gillen, C., Emily A. M. MacDougall, A. M., Salekin, A. T., & Forth, A. E. (2015). The validity of the Risk-Sophistication-Treatment Inventory- Abbreviated (RSTI-A): Initial evidence in support of a measure designed for juvenile evaluations. Psychology, Public Policy, and Law, 21, 205-212.

Book, A., Methot, T., Gauthier, N., Hosker-Field, A., Forth, A., Quinsey, V., & Molnar, D. (2015). The mask of sanity revisited: Psychopathic traits and affective mimicry. Evolutionary Psychology, 1, 91-102.

Kongerslev, M., Bo, S. Forth, A. E., & Simonsen, E. (2015). Assessment of the affective dimensions of psychopathy with the Danish version of the Inventory of Callous-Unemotional Traits amongst incarcerated boys: A study of reliability and validity. Scandinavian Journal of Child and Adolescent Psychiatry and Psychology, 3, 80-96.

Larmour, S., Bergstrøm, H., Gillen, C., & Forth, A. E. (2015). Behind the confession: Relating false confession, interrogative compliance, and psychopathy. Journal of Police and Criminal Psychology, 30, 94-102.

Selected Recent Conference Presentations

Reynolds, J., Karasavva, V., Stewart, J., & Forth, A. (2021, June 21). The eight deadly sin: Correlations and predictions of aggrieved and sexual entitlement. Poster presented at the Canadian Psychological Association annual conference (Virtual conference).

Smodis, A., Karasavva, V., Swanek, Jessie, & Forth, A. (2021, May 21). A date with danger: Dark personality traits and online dating.  Poster presented at Society for the Scientific Study of Psychopathy (Virtual conference).

Swanek, J., Karasavva, V., Smodis, A., & Forth, A. (May 22, 2021). Do you believe in myths: The Dark Tetrad and image-based sexual abuse myth acceptance. Poster presented at Society for the Scientific Study of Psychopathy (Virtual conference).

Karasavva, V., & Forth, A. (2021, March 20). The dark side of sexting: Non-consensual Intimate Image Dissemination Predictors and Motivators. Poster presented at the American Psychology-Law Society (AP-LS) virtual poster session (Virtual Conference).

Stewart, J., & Forth, A. E. (2019, June). Working with a psychopath: Is there light at the end of the tunnel? Paper presented at the symposium titled Psychopathic traits and manipulation: Implications for faking, victim impact, and post-experience growth at the International Association of Forensic Mental Health Services conference. Montreal, QC.

Mularczyk, K., Forth, A. E., & Beaudette, J. (2019, June). Psychopathic bosses and co-workers who bully: Impact and implications. Paper presented at the symposium titled Psychopathic traits and manipulation: Implications for faking, victim impact, and post-experience growth at the International Association of Forensic Mental Health Services conference. Montreal, QC.

Lapsley, S., & Forth, A. (2019, June). A wolf at the door: Psychopathic harm perpetrated in the context of intimate relationships. Paper presented at the symposium titled Psychopathic traits and manipulation: Implications for faking, victim impact, and post-experience growth at the International Association of Forensic Mental Health Services conference. Montreal, QC.

Ostapchuk, N., & Forth, A. (2019, May). Lay theories and attitudes about psychopathy. Paper presented at the symposium titled Lay Perceptions of Psychopathy at the 8th Society for the Scientific Study of Psychopathy conference.  Las Vegas, NV.

Book, A., Stark, A., MacEachern, J., Forth, A., Visser, B. J., & Wattam, T. (2019, May). In the eye of the beholder: Psychopathy and fear enjoyment. Paper presented at the symposium titled Psychopaths as social predators at the 8th Society for the Scientific Study of Psychopathy conference. Las Vegas, NV.

Brazil, K. J., & Forth, A. (2019, May). An “appealing” mask of sanity: Psychopathic traits, gaining trust, and generating romantic interest. Paper presented at the symposium titled Psychopaths as social predators at the 8th Society for the Scientific Study of Psychopathy conference. Las Vegas, NV.

Baglole, S., Tsang, S., Hare, R., & Forth, A. (2019, May). Psychopathic expression across the lifespan: An item response theory analysis of the Hare Psychopathy Checklist-Revised in younger and older adult male offenders. Paper presented at the 8th Society for the Scientific Study of Psychopathy conference. Las Vegas, NV.

Lapsley, S., Carson, S., & Forth, A. (2019, May). We’re not so different: A mixed methods examination of men and women’s responses to psychopathic abuse in the context of a romantic partnership. Poster presented at the 8th Society for the Scientific Study of Psychopathy conference. Las Vegas, NV.

Mularczyk, K., LePage, K., & Forth, A. (2019, May) Everybody does it: Cheating in academia and its relation to psychopathy. Poster presented at the 8th Society for the Scientific Study of Psychopathy conference. Las Vegas, NV.

Forth, A., Sezlik, S., Ritchie, M., Ellingwood, H., & Lee, S. (2018, June). Toxic intimate relationships: The impact of psychopathy. Paper presented at the symposium titled Psychopathy: Implications for victim selection and victim impact at the International Congress of Applied Psychology/Canadian Psychological Association conference. Montreal, QC.

Baglole, S & Forth, A. (2018, June). Defining strength: Outline and assessing the impact of resilience on psychopathic traits. Poster presented at the International Congress of Applied Psychology/Canadian Psychological Association conference. Montreal, QC.

Ostapchuk, N., & Forth, A. (2018, June). Untreatable evil criminals? Lay theories and attitudes about psychopathy. Gimme-5 presentation at the International Congress of Applied Psychology/Canadian Psychological Association conference. Montreal, QC.

Brazil, K. J., & Forth, A. E. (2018, July). Psychopathy induces favourable impressions from potential mates: A test of function. Poster presented at the 30th annual Human Behavior and Evolution Society conference. Amsterdam, The Netherlands.