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2nd Place 2006 Dissertation Award Winner: Age of Onset of Psychopathic Traits in Adolescent Offenders

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Abstract:

Dissertation completed at Simon Fraser University, Adviser: Stephen Hart. Psychopathy is a personality disorder characterized by a constellation of
maladaptive interpersonal, affective, and behavioral traits. Psychopathic traits have strong
associations with several negative outcomes in youth, including violence and criminality.
However, there are numerous developmental and ethical concerns regarding the direct
extension of the adult psychopathy construct to youth. Further, little is known about the
etiology and early course of psychopathy. The goal of this study was to investigate the
onset of the interpersonal, affective, and behavioral traits of psychopathy in a sample of
115 male young offenders. Youth were assessed to determine the presence, severity, and
age of onset of psychopathic traits. Results indicated that age of onset ratings were made
reliably for most traits. Survival analysis was employed to compute median ages of onset
for all psychopathic traits, which ranged from age 8 to 14. Traits reflecting deficient
affective experience, such as lacking remorse and empathy, had earlier ages of onset than
did other symptoms. The interpersonal and behavioral traits of impression management
and lacking goals had the latest ages of onset. However, it is unclear whether these traits
did not crystallize until later ages or whether their earlier manifestations are unable to be
detected due to a developmentally uninformed measurement instrument. High risk
developmental periods for the onset of psychopathic traits were also identified.
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Name: American Psychology - Law Society
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URL: http://citation.allacademic.com/meta/p239546_index.html
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MLA Citation:

Klaver, Jessica. "2nd Place 2006 Dissertation Award Winner: Age of Onset of Psychopathic Traits in Adolescent Offenders" Paper presented at the annual meeting of the American Psychology - Law Society, Hyatt Regency Jacksonville Riverfront, Jacksonville, FL, <Not Available>. 2013-12-15 <http://citation.allacademic.com/meta/p239546_index.html>

APA Citation:

Klaver, J. "2nd Place 2006 Dissertation Award Winner: Age of Onset of Psychopathic Traits in Adolescent Offenders" Paper presented at the annual meeting of the American Psychology - Law Society, Hyatt Regency Jacksonville Riverfront, Jacksonville, FL <Not Available>. 2013-12-15 from http://citation.allacademic.com/meta/p239546_index.html

Publication Type: Poster
Abstract: Dissertation completed at Simon Fraser University, Adviser: Stephen Hart. Psychopathy is a personality disorder characterized by a constellation of
maladaptive interpersonal, affective, and behavioral traits. Psychopathic traits have strong
associations with several negative outcomes in youth, including violence and criminality.
However, there are numerous developmental and ethical concerns regarding the direct
extension of the adult psychopathy construct to youth. Further, little is known about the
etiology and early course of psychopathy. The goal of this study was to investigate the
onset of the interpersonal, affective, and behavioral traits of psychopathy in a sample of
115 male young offenders. Youth were assessed to determine the presence, severity, and
age of onset of psychopathic traits. Results indicated that age of onset ratings were made
reliably for most traits. Survival analysis was employed to compute median ages of onset
for all psychopathic traits, which ranged from age 8 to 14. Traits reflecting deficient
affective experience, such as lacking remorse and empathy, had earlier ages of onset than
did other symptoms. The interpersonal and behavioral traits of impression management
and lacking goals had the latest ages of onset. However, it is unclear whether these traits
did not crystallize until later ages or whether their earlier manifestations are unable to be
detected due to a developmentally uninformed measurement instrument. High risk
developmental periods for the onset of psychopathic traits were also identified.

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