The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Children with conduct problems and co-occurring callous-unemotional (CU) traits show more severe, stable, and aggressive antisocial behaviors than those without CU traits. Exposure to negative life events has been identified as an important contributing factor to the expression of CU traits across time, although the directionality of this effect has remained unknown due to a lack of longitudinal study. The present longitudinal study examined potential bidirectional effects of CU traits leading to experiencing more negative life events and negative life events leading to increases in CU traits across three years among a sample of community-based schoolaged (M=10.9, SD=1.71 years) boys and girls (N = 98). Repeated rating measures of CU traits, negative life events and conduct problems completed by children and parents during annual assessments were moderately to highly stable across time. Cross-lagged models supported a reciprocal relationship of moderate magnitude between child-reported CU traits and "controllable" negative life events. Parent-reported CU traits predicted "uncontrollable" life events at the earlier time point and controllable life events at the later time point, but no reciprocal effect was evident. These findings have important implications for understanding developmental processes that contribute to the stability of CU traits in youth.Keywords: callous-unemotional traits, psychopathy, negative life events, maltreatment, reciprocal effects, longitudinal CU TRAITS AND NEGATIVE LIFE EVENTS 3
Reciprocal Influences Between Negative Life Events and Callous-Unemotional TraitsChildren with conduct problems and co-occurring callous-unemotional (CU) traits are a unique subpopulation showing greater impairment and more severe, stable, and aggressive antisocial behaviors across development relative to those low on CU traits (Byrd, Loeber, & Pardini, 2012;McMahon et al., 2010). CU traits describe individuals characterized by low levels of empathy and guilt, uncaring attitudes and behaviors, and a shallow experience and expression of emotions. They are believed to be a developmental precursor to psychopathic personality disorder, capturing its affective discomfort component (Lynam, Caspi, Moffitt, Loeber, & Stouthamer-Loeber, 2007). Analogous to adults with psychopathy, children with CU traits show a reward dominant response style and are insensitive to punishment when primed with reward , are underreactive to others' distress cues (Blair, 1999;Kimonis, Frick, Loney, & Fazekas, 200...