NCT07481253

Brief Summary

The goal of this clinical trial is to learn whether PSYCHOPATHY.COMP, an individual compassion-focused, therapy-based intervention of 20 weekly sessions, can reduce psychopathy in prison inmates. Psychopathy is linked with the most severe and persistent forms of antisocial behavior. This trial will also learn whether the program improves emotional and behavioral regulation. The main questions are:

  • Does PSYCHOPATHY.COMP reduce psychopathy?
  • Does PSYCHOPATHY.COMP improve emotional and behavioral regulation? Researchers will compare PSYCHOPATHY.COMP with the usual individual case management support provided in prisons. Portuguese-speaking adult male prison inmates will be invited to participate. Those who consent to participate will be screened for inclusion (T0). A total of 200 eligible participants will take part. All participants will be invited to complete a baseline assessment (T1, pre-treatment assessment), after which they will be randomly assigned to receive PSYCHOPATHY.COMP or the usual care provided in the prison for a period of around six months. All participants will be invited to complete a post-treatment assessment (T2) and a six-month follow-up assessment post-treatment. Assessments will collect data on sociodemographic characteristics and legal/criminal information, psychological outcomes (psychopathy, emotional regulation, and behavioral regulation), psychological mediators (mechanisms of change: compassion-related variables), and moderators (personality pathology), and data on social desirability. This study aims to contribute to advancing scientific knowledge about whether and how to reduce psychopathy among prison inmates and have an impact on clinical practice and society by making available evidence-based interventions to this at-risk/high-risk population.

Trial Health

63
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
200

participants targeted

Target at P75+ for not_applicable

Timeline
17mo left

Started Apr 2026

Geographic Reach
1 country

1 active site

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress12%
Apr 2026Nov 2027

First Submitted

Initial submission to the registry

March 13, 2026

Completed
5 days until next milestone

First Posted

Study publicly available on registry

March 18, 2026

Completed
14 days until next milestone

Study Start

First participant enrolled

April 1, 2026

Completed
1.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 30, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 30, 2027

Last Updated

March 24, 2026

Status Verified

March 1, 2026

Enrollment Period

1.7 years

First QC Date

March 13, 2026

Last Update Submit

March 19, 2026

Conditions

Keywords

Antisocial behaviorInstitutional behaviorCriminalityPSYCHOPATHY.COMPCompassion Focused TherapyPsychopathy

Outcome Measures

Primary Outcomes (2)

  • Efficacy Testing: change from eligibility assessment in participant-reported psychopathy (primary outcome) to six-month follow-up

    Modified intention-to-treat (mITT, all participants randomized) and per protocol (PP, only participants who completed a sufficient dose) analyses of mean differences in participant-reported psychopathy between PSYCHOPATHY.COMP and TAU groups. Measured with the Self-Report Psychopathy Scale - Short-form (SRP-SF): a 29-item, shortened version of SRP-4 that assesses psychopathy according to the conceptualization of the Hare's Psychopathy Checklist - Revised. SRP-SF measures four facets of psychopathy: interpersonal (INT; 7 items), affective (AFF; 7 items), lifestyle (LIF; 7 items), and antisocial (ANT; 8 items). Items are rated on a five-point Likert-type scale, ranging from 1: "Strongly disagree" to 5: "Strongly agree". Total and subscale scores are computed by summing the corresponding individual item scores (after correcting for reversed items), with higher scores indicating higher levels of psychopathic traits.

    From eligibility to six months after the end of treatment. Measured at eligibility (T0), baseline assessment (T1, pre-treatment), within one month after the end of treatment (T2, post-treatment), and six months (T3, follow-up) after the end of treatment

  • Efficacy Testing: change from eligibility assessment in participant-reported psychopathy (primary outcome) to six-month follow-up

    mITT and PP analyses of mean differences in participant-reported psychopathy between PSYCHOPATHY.COMP and TAU groups. Measured with the Levenson Self-Report Psychopathy Scale (LSRPS): a 26-item questionnaire assessing psychopathy in two domains: primary (selfish, callous, uncaring and manipulative; 16 items) and secondary (impulsivity and behavioural control; 10 items) psychopathy, which aligns with the conceptualization of the Hare's Psychopathy Checklist - Revised. Items are rated on a four-point Likert-type scale, ranging from 1: "Strongly disagree" to 4: "Strongly agree". Total and subscale scores are computed by summing the corresponding individual item scores (after correcting for reversed items), with higher scores indicating higher levels of psychopathy.

    From eligibility to six months after the end of treatment. Measured at eligibility (T0), baseline assessment (T1, pre-treatment), within one month after the end of treatment (T2, post-treatment), and six months (T3, follow-up) after the end of treatment

Secondary Outcomes (3)

  • Efficacy Testing: changes from baseline in participant-reported emotional regulation (secondary outcome) to six-month follow-up

    From baseline to six months after the end of treatment. Measured at baseline assessment (T1, pre-treatment), within one month after the end of treatment (T2, post-treatment), and six months (T3, follow-up) after the end of treatment

  • Efficacy Testing: changes from baseline in participant-reported emotional regulation (secondary outcome) to six-month follow-up

    From baseline to six months after the end of treatment. Measured at baseline assessment (T1, pre-treatment), within one month after the end of treatment (T2, post-treatment), and six months (T3, follow-up) after the end of treatment

  • Efficacy Testing: changes from eligibility in participant-reported behavioral regulation (secondary outcome) to six-month follow-up

    From eligibility to six months after the end of treatment: from eligibility to baseline (T0-T1, pre-treatment), baseline to within one-month after treatment (T1-T2, during treatment), within one-month to six months after treatment (T2-T3, post-treatment)

Other Outcomes (4)

  • Mediation Testing: participant-reported compassion-related variables

    From baseline to six months after the end of treatment. Measured at baseline assessment (T1, pre-treatment), within one month after the end of treatment (T2, post-treatment), and six months (T3, follow-up) after the end of treatment

  • Mediation Testing: participant-reported compassion-related variables

    From baseline to six months after the end of treatment. Measured at baseline assessment (T1, pre-treatment), within one month after the end of treatment (T2, post-treatment), and six months (T3, follow-up) after the end of treatment

  • Mediation Testing: participant-reported compassion-related variables

    From baseline to six months after the end of treatment. Measured at baseline assessment (T1, pre-treatment), within one month after the end of treatment (T2, post-treatment), and six months (T3, follow-up) after the end of treatment

  • +1 more other outcomes

Study Arms (2)

Treatment

EXPERIMENTAL

PSYCHOPATHY.COMP

Behavioral: PSYCHOPATHY.COMP

Control

ACTIVE COMPARATOR

Treatment as Usual (TAU)

Other: Treatment as Usual (TAU)

Interventions

Participants allocated to the treatment group will receive PSYCHOPATHY.COMP. PSYCHOPATHY.COMP is a manualized intervention of 20 weekly 60-min sessions (\~6 months) rooted in Compassion Focused Therapy (CFT). PSYCHOPATHY.COMP follows a progressive strategy of change in four modules: (1) The basics of our mind; (2) Our mind according to CFT; (3) Compassionate Mind Training; and (4) Recovery, relapse and prevention. As a common feature of all therapeutic sessions, therapists are focused on developing a secure therapeutic relationship. PSYCHOPATHY.COMP is delivered by psychologists skilled in CFT (including those from prisons). Psychologists will be trained (through an intensive, face-to-face 5-day training) and supervised (one session/month) by the research team during the delivery of the intervention. During PSYCHOPATHY.COMP, participants will not receive individual therapy (psychotherapy, psychological treatment) by an accredited psychologist or therapist.

Also known as: Treatment group
Treatment

Participants in the control group will receive the routine support offered in the prison setting, tailored to individual case management and focused on behavioural management and adjustment.

Also known as: Control group
Control

Eligibility Criteria

Age19 Years - 30 Years
Sexmale
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • male prison inmates,
  • Portuguese-speaking,
  • aged between 19 and 30 years
  • having at least one prior case in the juvenile justice system in which a judicial measure was applied,
  • with high levels of psychopathic traits (measured with the SRP-SF and LSRPS self-reported questionnaires)
  • with an Antisocial Personality Disorder (ASPD) diagnosis (measured with the SCID-II)

You may not qualify if:

  • suspected psychotic/autism spectrum disorders and/or cognitive impairments,
  • female,
  • sentence length inferior to 24 months since the start of the study.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Prisons of the Direção-Geral de Reinserção e Serviços Prisionais (DGRSP)

Lisbon, Portugal

Location

Related Publications (22)

  • Ribeiro da Silva, D., de Carvalho, I. M., & Garofalo, C. (2024). Treatment of youth and adults with psychopathic traits detained in forensic settings: A systematic review. Aggression and Violent Behavior, 76, 101922. https://doi.org/10.1016/j.avb.2024.101922

    BACKGROUND
  • Coelho, L., Paixão, R., & da Silva, J. T. (2010). O Levenson's Self Report Psychopathy Scale (LSRP). Psychologica, 53, 413-421

    BACKGROUND
  • Goss, K., Gilbert, P., & Allan, S. (1994). An exploration of shame measures-I: The other as Shamer scale. Personality and Individual Differences, 17, 713-717. http://dx.doi.org/10.1016/0191-8869(94)90149-X

    BACKGROUND
  • Matos, M., Pinto-Gouveia, J., Gilbert, P., Duarte, C., & Figueiredo, C. (2015). The Other As Shamer Scale-2: Development and validation of a short version of a measure of external shame. Personality and Individual Differences, 74, 6-11. https://doi.org/10.1016/j.paid.2014.09.037

    BACKGROUND
  • Neff, K. D. (2003). Self-Compassion: An Alternative Conceptualization of a Healthy Attitude Toward Oneself. Self and Identity, 2, 85-101. https://doi.org/10.1080/15298860309032

    BACKGROUND
  • Sousa, R., Castilho, P., Vieira, C., Vagos, P., & Rijo, D. (2017). Dimensionality and gender-based measurement invariance of the Compassion Scale in a community sample. Personality and Individual Differences, 117, 182-187. https://doi.org/10.1016/j.paid.2017.06.003

    BACKGROUND
  • Sousa R, Paulo M, Brazao N, Castilho P, Rijo D. Measuring compassion toward others: Dimensionality of the compassion scale in community adolescents and in adolescents with behavioral disorders. Psychol Assess. 2022 Jul;34(7):631-642. doi: 10.1037/pas0001133. Epub 2022 Mar 31.

    PMID: 35357875BACKGROUND
  • Spielberger, C. D. (1988). Professional Manual for the State-Trait Anger Expression Inventory (STAXI). Odessa, FX: Psychological Assessment Resources

    BACKGROUND
  • Levenson MR, Kiehl KA, Fitzpatrick CM. Assessing psychopathic attributes in a noninstitutionalized population. J Pers Soc Psychol. 1995 Jan;68(1):151-8. doi: 10.1037//0022-3514.68.1.151.

    PMID: 7861311BACKGROUND
  • Hare, R. D. (2003). Manual for the revised psychopathy checklist (2nd ed.). Toronto, Canada: Multi-Health Systems

    BACKGROUND
  • Paulhus, D. L., Neumann, C. S., & Hare, R. D. (2016). The SRP-4: Self-report psychopaty scale (4th ed.). Toronto, Canada: Multi-Health Systems

    BACKGROUND
  • First, M. B., Gibbon, M., Spitzer, R. L., Williams, J. B. W., & Benjamin, L. S. (1997). Structured Clinical Interview for DSM-IV Axis II Personality Disorders (SCID-II). Washington, DC: American Psychiatric Press.

    BACKGROUND
  • Gilbert P, McEwan K, Matos M, Rivis A. Fears of compassion: development of three self-report measures. Psychol Psychother. 2011 Sep;84(3):239-55. doi: 10.1348/147608310X526511. Epub 2011 Apr 13.

    PMID: 22903867BACKGROUND
  • Pommier E, Neff KD, Toth-Kiraly I. The Development and Validation of the Compassion Scale. Assessment. 2020 Jan;27(1):21-39. doi: 10.1177/1073191119874108. Epub 2019 Sep 13.

    PMID: 31516024BACKGROUND
  • Castilho P, Pinto-Gouveia J, Duarte J. Evaluating the Multifactor Structure of the Long and Short Versions of the Self-Compassion Scale in a Clinical Sample. J Clin Psychol. 2015 Sep;71(9):856-70. doi: 10.1002/jclp.22187. Epub 2015 Apr 22.

    PMID: 25907562BACKGROUND
  • Silva, D. R., Campos, R., & Prazeres, N. (1999). O Inventário de Estado-Traço de Raiva (STAXI) e sua adaptação para a população portuguesa. Revista Portuguesa de Psicologia, 34, 55-81

    BACKGROUND
  • Seara-Cardoso A, Queiros A, Fernandes E, Coutinho J, Neumann C. Psychometric Properties and Construct Validity of the Short Version of the Self-Report Psychopathy Scale in a Southern European Sample. J Pers Assess. 2020 Jul-Aug;102(4):457-468. doi: 10.1080/00223891.2019.1617297. Epub 2019 Jun 12.

    PMID: 31188025BACKGROUND
  • Knight, R. A., & Guay, J.-P. (2006). The Role of Psychopathy in Sexual Coercion against Women. In C. J. Patrick (Ed.), Handbook of psychopathy (pp. 512-532). The Guilford Press

    BACKGROUND
  • Hare, R. D. (2020). The PCL-R assessment of psychopathy. In A. R. Felthous & H. Saß (Eds.), The Wiley International Handbook on Psychopathic Disorders and the Law (pp. 63-106). John Wiley & Sons. https://doi.org/10.1002/9781119159322.ch4

    BACKGROUND
  • Brazao N, Rijo D, da Silva DR, do Ceu Salvador M, Pinto-Gouveia J. Personality Pathology Profiles as Moderators of the Growing Pro-Social Program: Outcomes on Cognitive, Emotion, and Behavior Regulation in Male Prison Inmates. J Pers Disord. 2021 Feb;35(1):84-113. doi: 10.1521/pedi_2019_33_424. Epub 2019 Apr 15.

    PMID: 30985238BACKGROUND
  • Gillespie SM, Jones A, Garofalo C. Psychopathy and dangerousness: An umbrella review and meta-analysis. Clin Psychol Rev. 2023 Mar;100:102240. doi: 10.1016/j.cpr.2022.102240. Epub 2022 Dec 13.

    PMID: 36608488BACKGROUND
  • Ribeiro da Silva D, Rijo D, Brazao N, Paulo M, Miguel R, Castilho P, Vagos P, Gilbert P, Salekin RT. The efficacy of the PSYCHOPATHY.COMP program in reducing psychopathic traits: A controlled trial with male detained youth. J Consult Clin Psychol. 2021 Jun;89(6):499-513. doi: 10.1037/ccp0000659.

    PMID: 34264698BACKGROUND

MeSH Terms

Conditions

Antisocial Personality DisorderCriminal Behavior

Interventions

TherapeuticsControl Groups

Condition Hierarchy (Ancestors)

Personality DisordersMental DisordersBehavior

Intervention Hierarchy (Ancestors)

Epidemiologic Research DesignEpidemiologic MethodsInvestigative TechniquesResearch DesignMethods

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: The allocation sequence will be generated by an external researcher using a 1:1 computer-generated blocked randomized allocation to the treatment (PSYCHOPATHY.COMP) or control (treatment as usual - TAU) groups. Allocation will be concealed using sequentially numbered opaque sealed envelopes. Study personnel who enroll and assign participants will have no access to the random allocation sequence. The randomization sequence will be stratified by prison with permuted random block sizes. The data analyst will be blinded to group allocation.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant Professor

Study Record Dates

First Submitted

March 13, 2026

First Posted

March 18, 2026

Study Start

April 1, 2026

Primary Completion (Estimated)

November 30, 2027

Study Completion (Estimated)

November 30, 2027

Last Updated

March 24, 2026

Record last verified: 2026-03

Data Sharing

IPD Sharing
Will share

The study protocol will be submitted for publication. Participant individual data will be de-identified but will not be shared due to confidentiality and privacy concerns related to the sensitive nature of the participant population. De-identified aggregate data may be available upon reasonable request, subject to ethical approval.

Shared Documents
STUDY PROTOCOL, SAP, ICF, ANALYTIC CODE
Time Frame
Start date: March 2026 - no end date
Access Criteria
IPD and supporting information will made open on the Open Science Framework (OSF)
More information

Locations