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  • 1. Kimonis, Eva R.
    et al.
    Frick, Paul J.
    Munoz, Luna C.
    Örebro University, Department of Behavioural, Social and Legal Sciences.
    Aucoin, Katherine J.
    Can a laboratory measure of emotional processing enhance the statistical prediction of aggression and delinquency in detained adolescents with callous-unemotional traits?2007In: Journal of Abnormal Child Psychology, ISSN 0091-0627, E-ISSN 1573-2835, Vol. 35, no 5, p. 773-785Article in journal (Refereed)
    Abstract [en]

    In this cross-sectional study, we investigated whether the combination of the presence of callous-unemotional (CU) traits and emotional deficits to distressing stimuli, assessed by a computerized dot-probe task, enhanced the statistical prediction of aggression and delinquency in a sample of 88 detained and predominantly African-American (68%) adolescents (M age = 15.57; SD = 1.28). Overall, self-reported CU traits were associated with self-report measures of aggression and delinquency, but not with official records of arrests. However, there was an interaction between CU traits and emotional deficits for predicting self-reported aggression, self-reported violent delinquency, and a record of violent arrests. Youth high on CU traits and who showed a deficit in their responses to visual depictions of distress showed the highest levels of aggression and violent delinquency.

  • 2.
    Munoz, Luna C.
    et al.
    Örebro University, Department of Behavioural, Social and Legal Sciences.
    Frick, Paul J.
    The reliability, stability, and predictive utility of the self-report version of the Antisocial Process Screening Device2007In: Scandinavian Journal of Psychology, ISSN 0036-5564, E-ISSN 1467-9450, Vol. 48, no 4, p. 299-312Article in journal (Refereed)
    Abstract [en]

    The psychometric properties of the self-report version of the Antisocial Processes Screening Device (APSD; Frick & Hare, 2001), a rating scale developed to assess traits associated with the construct of psychopathy in youth, was tested in a sample of 91 non-referred young adolescents with an average age of 13.38 (SD = 1.75) at the initial assessment. The sample was recruited from a large community-wide screening, where youth with conduct problems and youth high on psychopathic traits were over-sampled. The sample was reassessed three times at yearly intervals. The self-report scores on the APSD showed moderate correlations with parent ratings of psychopathic traits, were moderately stable across 1-2 years, and showed significant correlations with measures of antisocial behavior both concurrently and predictively One major weakness of the self-report ratings was the low internal consistency of the subscales, which were much lower than the internal consistency found on the parent report version of the scale.

  • 3.
    Munoz, Luna C.
    et al.
    Örebro University, Department of Behavioural, Social and Legal Sciences.
    Frick, Paul J.
    Kimonis, Eva R.
    Aucoin, Katherine J.
    Verbal ability and delinquency: testing the moderating role of psychopathic traits2008In: Journal of Child Psychology and Psychiatry and Allied Disciplines, ISSN 0021-9630, E-ISSN 1469-7610, Vol. 49, no 4, p. 414-421Article in journal (Refereed)
    Abstract [en]

    Background Impaired verbal abilities are one of the most consistent risk factors for serious antisocial and delinquent behavior. However, individuals with psychopathic traits often show serious antisocial behavior, despite showing no impairment in their verbal abilities. Thus, the aim of the current study was to examine whether psychopathy moderates the relationship between verbal abilities and delinquent behavior in a sample of detained youth. Methods The sample included 100 detained adolescent boys who were assessed on self-reported delinquent acts and psychopathic traits, as well as their age at first offense based on official records. Participants also completed a competitive computer task involving two levels of provocation, during which skin conductance was measured. A standard measure of receptive vocabulary was individually administered. Results As predicted, there was a significant interaction between callous-unemotional (CU) traits (a critical dimension of psychopathy) and verbal ability when predicting violent delinquency. Individuals who were high on CU traits with higher scores on the measure of verbal abilities reported the greatest violent delinquency. These individuals also showed the lowest level of skin conductance reactivity during the provocation task. Conclusions The results suggest CU traits are an important moderator of the relation between verbal abilities and violent delinquency.

  • 4.
    Muñoz, Luna C.
    et al.
    Örebro University, Department of Behavioural, Social and Legal Sciences.
    Frick, Paul J.
    Kimonis, Eva R.
    Aucoin, Katherine J.
    Types of aggression, responsiveness to provocation, and callous-unemotional traits in detained adolescents2008In: Journal of Abnormal Child Psychology, ISSN 0091-0627, E-ISSN 1573-2835, Vol. 36, no 1, p. 15-28Article in journal (Refereed)
    Abstract [en]

    The present study investigated differences in the behavioral and psychophysiological responses to provocation and in the level of callous-unemotional traits in boys exhibiting different patterns of aggression. Eighty-five boys (ages 13-18) in a juvenile detention center played a competitive computer task against a hypothetical peer who provided low and high levels of provocation. Youth high on both self-reported reactive and proactive aggression showed different behavioral responses to provocation than youth high on only reactive aggression. Specifically, the combined group showed high levels of aggressive responses without any provocation, whereas the group high on reactive aggression showed an increase in aggressive responding to low provocation. Further, results revealed a trend for the combined group to show lower levels of skin conductance reactivity to low provocation if they were also high on callous-unemotional traits.

  • 5.
    Muñoz, Luna C.
    et al.
    Örebro University, School of Law, Psychology and Social Work.
    Kerr, Margaret
    Örebro University, School of Law, Psychology and Social Work.
    Bešić, Nejra
    Örebro University, School of Law, Psychology and Social Work.
    The peer relationships of youths with psychopathic personality traits: A matter of perspective2008In: Criminal justice and behavior, ISSN 0093-8548, E-ISSN 1552-3594, Vol. 35, no 2, p. 212-227Article in journal (Refereed)
    Abstract [en]

    Because a callous use of others in many short-term relationships is one criterion for diagnosing psychopathy in adults, one would expect adolescents who are high on psychopathic personality traits to have unstable, conflict-ridden peer relationships. Little is known about this, however, or about the peer activities of youths who are high in psychopathic traits. The authors examined relationship quality and delinquency with peers in a community sample of 12- to 15-year-old adolescents who were stably high or stably low on psychopathic traits during 4 years. Peers also provided data on relationship quality. Youths high on psychopathic traits often engaged in antisocial activities with their peers. Although they reported conflict in their peer relationships, their peers did not report low support or high conflict in those relationships. The authors conclude that youths with psychopathic traits have biased perspectives on interactions with close peers, and this might underlie future problems.

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