Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Using the Karolinska Scales of Personality on male juveniles in correctional institutions: some psychometric issues
University West, Department of Social and Behavioural Studies, Division of Psychology and Organisation Studies.ORCID iD: 0000-0002-8562-5610
Stockholm University, Department of Psychology.
Stockholm University, Department of Psychology.
Stockholm University, Department of Psychology.
(English)Manuscript (preprint) (Other academic)
Abstract [en]

The overriding aim of the present study was to psychometrically evaluate the Karolinska Scales of Personality (KSP) in a delinquent sample. The KSP was administered to a group of male juvenile delinquents (N = 47, mean age 17 years; SD = 1.2) from four representative Swedish national correctional institutions for serious offenders with conduct disorder, and evaluated by means of statistical methods. As expected, reliability in terms of internal consistency, measured by Cronbach's alpha, for some basic scales (Socialization, Muscular Tension, Somatic Anxiety, and Impulsiveness) was high (> .70). However, according to previous research, all aggressiveness and hostility-related scales, with the exception of Verbal aggression scale, showed low reliability. Reliability in terms of homogeneity, measured by mean interitem correlations, was acceptable (> .20) for 6 out of 15 scales. Factor analysis (maximum likelihood) arrived in this sample at a four-factor solution. Issues regardingthe interpretation of reliability, in terms of Cronbach's alpha or scale homogeneity, are highlighted. The concepts of reliability of personality measures in deviant groups are discussed and also possible guidelines for the construction of personality inventories in groups of this kind. The results are  briefly discussed from a cultural perspective.

Keyword [en]
Juvenile delinquents within correctional institutions, Karolinska Scales of Personality, reliability, validity, factor analysis
National Category
Social Sciences
Research subject
SOCIAL SCIENCE, Psychology
Identifiers
URN: urn:nbn:se:hv:diva-5048OAI: oai:DiVA.org:hv-5048DiVA: diva2:586076
Projects
“Dr. Jekyll och Mr. Hyde beteende” bland manliga kriminella ungdomar i samband med alkohol kombinerad med bensodiazepiner: Biologiska och psykologiska indikatorerDyslexi bland tvångsomhändertagna ungdomar: Psykologiska, sociala och biologiska indikatorer
Note

Ingår i avhandlingen "Personlity traits and psychopathy (PCL-R) in male juvenile delinquents" (2002). Submitted for publication.

Available from: 2013-01-10 Created: 2013-01-10 Last updated: 2014-01-10Bibliographically approved
In thesis
1. Personality traits and psychopathy (PCL-R) in male juvenile delinquents
Open this publication in new window or tab >>Personality traits and psychopathy (PCL-R) in male juvenile delinquents
2002 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

 Abstract

 

State-administered correctional institutions in Sweden take care of approximately 600 juvenile delinquents every year. The treatment for these institutionalized young people is based mainly on environmental programs and milieu therapy.

Fifty-six conduct-disordered juvenile delinquents (mean age 17 years) from four institutions were studied with respect to their personality traits, and the prevalence of psychopathy (measured by the Hare Psychopathy Checklist – Revised, PCL-R). One objective was to study the reliability and validity of commonly used personality inventories. In particular, the validity of psychopathy-related personality traits, included in Schalling’s psychopathy model (1978), was examined by studying the relationships between personality traits and psychopathy (PCL-R), the occurrence of previous treatment occasions, and relapse into crime. Four groups, the delinquent participants, a group of high sensation-seekers (air force pilot recruits), normal male adolescent participants, and another group of normal young males, completed a number of personality inventories, which enabled us to obtain measures of personality traits. The personality inventories used were the Karolinska Scales of Personality (KSP), the Eysenck Personality Questionnaire, and the Zuckerman Sensation-Seeking Scales. In addition, the delinquent participants were rated on psychopathy according to the modified version of the PCL-R, designed to be used with young people (Fort, Hart, & Hare, 1990). Both variable-oriented (factor analysis, MANOVA) and person-oriented statistical methods (cluster analysis) were applied.

As expected, most personality traits in the delinquent participants deviated from published norms and from our control groups. The delinquent participants showed a high level of pathology or vulnerability for developing mental disorders (such as substance abuse). About 60% of the delinquent participants had scores above 30 on the PCL-R, and were thus classified as psychopaths according to the manual. Further, 73% had scores between 27 and 40, indicating a high level of psychopathy. Delinquent participants showed a different pattern of sensation-seeking behavior than air force pilot recruits and normal adolescent participants, and differed also in other personality traits. They had a low level of socialization, indicating a lack of ability to take the role of the generalized other, and a tendency to impulsiveness, somatic anxiety and extraversion-sociability. The construct validity (convergent and divergent) of the KSP scales was found to be adequate. Some of the personality traits in delinquent participants, however, showed a different correlation pattern than that found in noncriminal people. Some of the basic scales from the KSP had high reliability, but many were not reliable when used on delinquent participants. Four factors were extracted using the maximum likelihood method. No significant correlations were found between the personality scale scores and the PCL-R scores. Finally, cluster analysis of the reliable and valid psychopathy-related personality scales from the KSP (Impulsiveness, Monotony avoidance, Socialization, Verbal aggression, and Somatic anxiety) identified seven different clusters of delinquent participants.

The uncertain validity of some personality traits (e.g., psychoticism or detachment), the poor reliability of many of the KSP scales (e.g., Guilt, Suspicion, and Inhibition of aggression) when used on this population, together with some minor limitations of the studies (e.g., sample size) are discussed.

In conclusion, the high prevalence of psychopathy in the present sample of male delinquent participants may have important clinical treatment implications, particularly since some researchers have suggested that milieu therapy increases relapse rates into crime in adult psychopaths. Hopefully, appropriate assessment of personality traits and psychopathy (in addition to obvious routine assessments of mental disorders, such as substance abuse or disabilities such as dyslexia), supervision, and the implementation of effective correctional programs, may prevent young people with deviant personalities from aggravating their deviant style of living.

 

Key words: Personality traits, psychopathy (PCL-R), juvenile delinquents, reliability, validity, assessment.

Place, publisher, year, edition, pages
Stockholm: Stockholm University, 2002. 252 p.
Keyword
Personality traits, psychopathy (PCL-R), juvenile delinquents, reliability, validity, assessment
National Category
Psychology
Research subject
SOCIAL SCIENCE, Psychology
Identifiers
urn:nbn:se:hv:diva-5359 (URN)91-7265-396-5 (ISBN)
Public defence
2002-01-25, Frescati, Hagväg 8, Stockholm, 08:54
Opponent
Supervisors
Available from: 2013-05-29 Created: 2013-05-29 Last updated: 2014-01-10Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Dåderman, Anna Maria
By organisation
Division of Psychology and Organisation Studies
Social Sciences

Search outside of DiVA

GoogleGoogle Scholar

Total: 137 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf