Psychopathy Checklist: Youth Version (PCL:YV)

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Psychopathy Checklist: Youth
Version (PCL:YV)
Kristopher Brazil and Adelle Forth
Department of Psychology, Carleton University,
Ottawa, ON, Canada
Synonyms
Hare Psychopathy Checklist: Youth Version;
PCL:YV;Psychopathy Checklist: Youth Version
Definition
An assessment instrument designed for youth
ages 12–18 for the assessment of psychopathic
traits and behaviors underlying the construct of
psychopathy
Introduction
The Hare Psychopathy Checklist:Youth Version
(PCL:YV; Forth et al. 2003) is an assessment
instrument designed to assess psychopathic traits
and behaviors in youth ages 12–18. It was adapted
from the Hare Psychopathy Checklist-Revised
(PCL-R), a well validated, reliable, and exten-
sively used assessment instrument for assessing
psychopathic traits in adults. The purpose of the
PCL:YV is to provide a reliable measurement of
the psychopathy construct in youth to enable an
understanding of early precursors to adult psy-
chopathy, identify potential risk and resilience
factors, and promote research that can enable cir-
cumvention of problematic behaviors through
effective treatment. This entry describes the con-
tent and structure of the PCL:YV, how it is admin-
istered and scored, and its psychometric
properties. Finally, a brief summary of research
using the PCL:YV is explored to illustrate its
validity and associated features.
Content and Structure of the PCL:YV
The PCL:YV consists of 20 items that describe
traits and behaviors underlying the construct of
psychopathy. Some items assess psychological
traits that identify callous and unemotional dispo-
sitions as well as manipulative and deceitful per-
sonality styles. Other items include behavioral
traits that indicate risky, violent, and criminal
activities. Factor analysis has produced a four-
factor solution where each item contributes to
one of four factors except for two items, which
do not contribute to any factor. The four factors
can be thought of each as a cluster of psycholog-
ical and/or behavioral traits. Researchers and cli-
nicians often classify the interpersonal and
affective factors as the psychological features
and behavioral and antisocial factors as the behav-
ioral features of psychopathy. The interpersonal
and affective factors are also described as
#Springer International Publishing AG 2016
V. Zeigler-Hill, T.K. Shackelford (eds.), Encyclopedia of Personality and Individual Differences,
DOI 10.1007/978-3-319-28099-8_1102-1

constituting the core personality features of psy-
chopathy. A three-factor solution (interpersonal,
affective, and behavioral factors) has also been
applied to the PCL:YV.
Administering the PCL:YV
The person administering the PCL:YV is often
called the rater. Administration typically occurs
in correctional, mental health, and research insti-
tutions. Individuals licensed to conduct psycho-
logical assessments with an advanced university
degree (e.g., M.D., M.A., Ph.D.) can administer
the PCL:YV for clinical purposes, whereas raters
in research settings are not required to be licensed
professionals. It is recommended the rater estab-
lishes their reliability through training before
using the PCL:YV for clinical purposes. Admin-
istering the PCL:YV involves a file review of the
youth’s record and a one-on-one interview. Some
research has found that file-only assessments of
the PCL:YV have produced reliable and valid
results as well. The file review should contain
information from many sources (e.g., interper-
sonal relationships, police, parents, etc.) and
include information from many contexts of the
youth’s life (e.g., home, school, institution, etc.).
The file review provides context to guide the
interview and enables the rater to formulate ques-
tions to ask the youth. The interview is semi-
structured in order to establish rapport and to
permit the youth’s interpersonal style to be
expressed. Keeping detailed notes or recording
the interview enables the rater to return to it for
information when scoring items. A typical inter-
view will last approximately 90–120 min.
Scoring the PCL:YV
Each item is scored on a three-point ordinal scale
from 0 to 2. A score of 0 indicates that the trait is
not present from the evidence gathered about the
youth. A score of 1 indicates there is some indi-
cation or mixed evidence of the trait being present
in the youth. Finally, a score of 2 indicates the trait
is definitely present and in many areas of the
youth’s life. Specific definitions of each item as
well as where and how to obtain information to
score each item are described in the manual (Forth
et al. 2003).
The total score is the sum of scores from all the
items, making a possible range from 0 to 40, with
a score closer to 40 indicating more psychopathic
features suggested in the youth. Factor scores are
calculated by summing the items that contribute to
each factor, resulting in a range of 0–8 for the
interpersonal and affective factors and 0–10 for
the behavioral and antisocial factors. Researchers
will often implement cutoff total scores (e.g.,
25 or 30) for research studies with youth scoring
above the cutoff being placed in the psychopathic
traits group and youth scoring below it being
placed in the non-psychopathic traits group. Cli-
nicians may also adopt a clinically significant
cutoff total score where scores above the cutoff
warrants further clinical attention for treatment of
psychopathy. The PCL:YV designers discuss sev-
eral issues with clinical cutoff scores and other
potential issues to consider when assessing youth
for psychopathic traits. These are shown in
Table 1.
Psychometric Properties and Prevalence
The comparison sample of the PCL:YV consists
of 2438 youth from Canada, the United States,
and the United Kingdom from institutionalized,
probation, psychiatric inpatient, and community
settings (Forth et al. 2003). Percentile and T-score
tables are available for each setting and gender.
The PCL:YV has strong psychometric proper-
ties. The interrater reliability of PCL:YV total
scores is high within research settings (single-
rater intraclass correlation coefficients (ICCs) of
0.90–0.96). However, it is not clear if the same
interrater reliability is evident within real-world
contexts. The internal consistency of PCL:YV
total scores is also high, with Cronbach’s alpha
coefficients ranging from 0.85 to 0.94. The factor
scores have more variable reliabilities, with
interrater reliability ranging from acceptable to
excellent (0.70–0.90) and internal consistency
2 Psychopathy Checklist: Youth Version (PCL:YV)

ranging from questionable to excellent
(0.22–0.86).
PCL:YV total scores do not appear to be
unduly influenced by youths’age, gender, or eth-
nicity. Boys consistently have higher scores than
girls, which mimics the adult literature. Some
studies examining the predictive validity of the
PCL:YV have found less consistent findings with
girls, suggesting caution be exercised when using
the PCL:YV as a risk assessment for girls. Across
ethnicity, the comparison sample shows compara-
ble interrater reliability and internal consistency,
which has been replicated in research studies
using different ethnicities. Cross-validation of
the PCL:YV has been conducted on youth from
other countries, including Portugal, where PCL:
YV total scores have a lower but acceptable inter-
nal consistency compared to other samples
(Pechorro et al. 2015).
The prevalence of high-scoring youth on the
PCL:YV varies depending on the setting and
cutoff score used. Estimates of total prevalence
across the sexes vary from approximately
10–30% in incarcerated samples with a higher
prevalence for boys specifically. Lower estimates
are present in youth from clinical and community
samples, where prevalence is typically below 1%,
similar to the adult population. The stability of
PCL:YV total scores has been assessed in at
least one study, showing that PCL:YV total scores
were largely stable after a 1- and 2-year follow-up
period (Kimonis et al. 2011). The direct associa-
tion between PCL:YV scores and PCL-R scores
has not been examined, but a number of validation
studies and associated features of the PCL:YV
suggest that it demonstrates similar results in
youth as the PCL-R does in adults.
Psychopathy Checklist: Youth Version (PCL:YV), Table 1 Unique concerns when assessing youth for psychopathic
traits and recommendations for assessors when scoring the PCL:YV
Concern Example Recommendation
Labeling Cutoff score to label a youth
“psychopath”is
problematic
Influence access to treatments,
institutional programming, and
parole
No score should be taken as
evidence that the youth is a
“psychopath,”no matter how
high a score
Non-
normative
Norms and averages of
psychological and
behavioral traits are
different in youth compared
to adults
Risk-taking behaviors are more
common in youth than adults (see
Ellis et al. 2012)
Consider youth populations’
norms and averages when
assessing youth for
psychopathic traits
Age
appropriate
Youth have different goals,
motivations, and
responsibilities than adults
Youth are not expected to have an
extensive work history or
dependents, and they have
different emotional and social
concerns than adults
Items should be considered in
light of youth’s age-appropriate
goals, motivations, and
responsibilities
Stable
characteristics
Transitory problems in a
youth’s life may have undue
influence on their score
Youth whose parents are going
through a divorce may be acting
more antisocial since the divorce
Consider a broad age range
(early childhood to present) and
consider many contexts in the
youth’s life (e.g., home, school,
etc.)
Multiple
sources
One or a few sources may
provide perspectives that
have an undue influence on
the youth’s score
A teacher reports presence of
bullying and antisocial behaviors
against others in the class, but a
coach reports prosocial acts
Items are scored based on many
sources. These may include
parents, teachers, friends, parole
officers, coaches, and mental
health and criminal records
Psychopathy Checklist: Youth Version (PCL:YV) 3

Research Using the PCL:YV: Validation
and Associated Features
A reliable finding in forensic research examining
juvenile criminal recidivism is that youth with
higher PCL:YV scores tend to be repeat offenders
(Forth et al. 2003). However, it has been shown to
predict short-term recidivism more strongly than
it does long-term recidivism into adulthood. This
finding suggests youth with psychopathic traits
may be more amenable to changing the course of
their offending behaviors as they transition into
adulthood. Despite this, the PCL:YV provides
incremental validity of recidivism beyond other
risk assessment instruments, making it a valuable
measurement to detect serious repeat offenders
(Forth et al. 2016). Meta-analytic studies show
the PCL:YV has moderate effect sizes in pre-
dicting institutional misconduct and both general
and violent recidivism. These effects did not differ
from the PCL-R findings with adults, suggesting
convergent validity between the measures
(Leistico et al. 2008). Other research has found
the PCL:YV to be positively associated with more
severe victim injury and the use of instrumental
violence (violence used to obtain a goal), while
higher PCL:YV scores have been found in juve-
nile sex offenders compared to juvenile non-sex
offenders (Cale et al. 2015).
PCL:YV scores have also been associated with
biological features. PCL:YV interpersonal factor
scores may be related to different hormonal cou-
pling patterns (Johnson et al. 2014), and para-
limbic brain areas have shown to be a reliable
biomarker for both youth scoring high on the
PCL:YV and adults scoring high on the PCL-R,
suggesting a common anatomical pathway
between youth and adult psychopathy (Walters
et al. 2015). Other research has used the PCL:
YV to examine genetic and environmental influ-
ences of youth psychopathy in community sam-
ples, providing some evidence for the heritability
of psychopathic traits (Tuvblad et al. 2014).
The psychological and behavioral features of
the PCL:YVare often each found to be associated
with different findings. The psychological fea-
tures, often described as the core personality fea-
tures, have been associated with neurocognitive
differences on tasks, emotional and social pro-
cessing differences, and intelligence differences.
The behavioral features are often associated with
criminal recidivism, history of abuse, and mental
health issues such as conduct disorder, anxiety,
and substance use. The PCL:YV has also been
used to predict personality disorders. Interper-
sonal and antisocial factors assessed in adoles-
cence were shown to predict antisocial
personality disorder symptoms 5 years later in
addition to conduct disorder symptoms
(Hemphälä and Hodgins 2014). These findings
have led researchers to continue examining differ-
ential effects of the PCL:YV factors on different
outcomes in addition to examining the PCL:YV
total score.
Conclusion
Psychopathy is a socially disruptive and often
harmful personality style that warrants careful
and systematic study to begin circumventing the
problematic behaviors associated with its
development. The PCL:YV is a reliable and
well-validated assessment tool that enables
researching this difficult personality style before
adulthood. Its factor structure and use has demon-
strated similar findings between youth and adult
psychopathy using the PCL-R, suggesting that it
captures a similar construct in youth as it does in
adulthood. Research using the PCL:YV identifies
general characteristics as well as problems and
skills in youth with psychopathic traits. These
findings can be used by clinicians and researchers
to work with, instead of against, the manifesta-
tions of psychopathic traits in youth to develop
more effective treatment programs (see Ellis
et al. 2012).
Cross-References
▶Psychopathy
▶Psychopathy Checklist Revised (PCL-R)
4 Psychopathy Checklist: Youth Version (PCL:YV)

References
Cale, J., Lussier, P., McCuish, E., & Corrado, R. (2015).
The prevalence of psychopathic personality distur-
bances among incarcerated youth: Comparing serious,
chronic, violent and sex offenders. Journal of Criminal
Justice, 43, 337–344.
Ellis, B. J., Del Giudice, M., Dishion, T. J., Figuerdo, A. J.,
Gray, P., Griskevicius, V.,..., & Wilson, D. S. (2012).
The evolutionary basis of risky adolescent behavior:
Implications for science, policy, and practice. Develop-
mental Psychology,48, 598–623.
Forth, A. E., Kosson, D. S., & Hare, R. D. (2003). The hare
psychopathy checklist: youth version. Toronto: Multi-
Health Systems.
Forth, A. E., Bergstrøm, H., & Clark, H. J. (2016). Psy-
chopathic traits in adolescence: Assessment and impli-
cations. In C. Gacono (Ed.), The clinical and forensic
assessment of psychopathy: A practitioner’s guide
(2nd ed., pp. 115–136). New York: Routledge/Taylor
& Francis Group.
Hemphälä, M., & Hodgins, S. (2014). Do psychopathic
traits assessed in mid-adolescence predict mental
health, psychosocial, and antisocial, including criminal
outcomes, over the subsequent 5 years? Canadian
Journal of Psychiatry, 59, 40–49.
Johnson, M. M., Dismukes, A. R., Vitacco, M. J., Breiman,
C., Fleury, D., & Shirtcliff, E. A. (2014). Psychopathy’s
influence on the coupling between hypo-
thalamic–pituitary–adrenal and –gonadal axes among
incarcerated adolescents. Developmental Psychobiol-
ogy, 56, 448–458.
Kimonis, E. R., Skeem, J. L., Cauffman, E., & Dmitrieva,
J. (2011). Are secondary variants of juvenile psychop-
athy more reactively violent and less psychosocially
mature than primary variants? Law and Human Behav-
ior, 35, 381–391.
Leistico, A.-M. R., Salekin, R. T., DeCoster, J., & Rogers,
R. (2008). A large-scale meta-analysis relating the hare
measures of psychopathy to antisocial conduct. Law
and Human Behavior, 32, 28–45.
Pechorro, P., Barroso, R., Maroco, J., Vieira, R. X., &
Gonçalves, R. A. (2015). Psychometric properties of
the psychopathy checklist: Youth version among Por-
tuguese juvenile delinquents. International Journal of
Offender Therapy and Comparative Criminology, 59,
1322–1337.
Tuvblad, C., Bezdjian, S., Raine, A., & Baker, L. A.
(2014). The heritability of psychopathic personality in
14- to 15-year old twins: A multirater, multimeasure
approach. Psychological Assessment, 26, 704–716.
Walters, G. D., Ermer, E., Knight, R. A., & Kiehl, K. A.
(2015). Paralimbic biomarkers in taxometric analyses
of psychopathy: Does changing the indicators change
the conclusion? Personality Disorders: Theory,
Research, and Treatment, 6, 41–52.
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