This time we went beyond simply asking questions. Adolescents were identified as twins or triplets from public school rosters and recruited via invitation by phone call or mailing.
Recently, research focus has turned to the association between poor sleep and disruptive behaviour , including aggression and rule-breaking. The association was not found when we measured sleep using the motion sensors. Our research group has conducted several experimental lines of work in recent years. Third, the emerging pattern of distinct neurocognitive vulnerability to antisocial behavior in children with high vs.
I have been particularly motivated to use multiple twin model-fitting, genotyping, experimental psychology, and brain imaging methods in order to shed light on the underlying mechanisms that may make some children more vulnerable to antisocial behavior. Work by my former post doc, Nathalie Fontaine, now at Indiana University, indicates that stable high levels of callous-unemotional traits are strongly heritable, in particular for boys. Moreover, the study was granted a federal certificate of confidentiality that exempts us from disclosing identifiable research information in response to legal demands. The current study measured broad dimensions of personality to test whether CU traits are influenced by genetic variants independent of those variants that influence a broad range of normal personality traits.
Examining the relations among Big Five personality traits and CU traits, which have been studied more narrowly in relation to Conduct Disorder and Antisocial Personality Disorder, has the potential to both deepen our understanding of the origin of individual differences in CU traits, as well as broaden our understanding of how CU traits may be linked to dimensions of problematic psychological functioning beyond the externalizing disorders. Researchers have shown that a wide variety of emotional and behavioural problems are intricately interwoven with the way we sleep.
Adolescents were identified as twins or triplets from public school rosters and recruited via invitation by phone call or mailing. They are often less sensitive to punishment cues, particularly when they are already keen for a reward.
We asked some of the participants 43 of those tested to wear watch-like devices with motion sensors to measure their sleep. The current study measured broad dimensions of personality to test whether CU traits are influenced by genetic variants independent of those variants that influence a broad range of normal personality traits. Perhaps the most striking finding from this sample was that, after considering the effects of age and sex of the participants, better sleep quality assessed both by asking the participants questions and from some information provided by the motion sensors was associated with higher levels of callous and unemotional traits.
Posted by: Vulmaran | on October 2, 2012
I observed behavior that was characterised by violent bullying, callous blackmail of other boys, attempts to intimidate members of staff, and lack of regret for his actions. Moreover, the study was granted a federal certificate of confidentiality that exempts us from disclosing identifiable research information in response to legal demands. Tom was a charming and effusive pupil and I instantly warmed to him.
One day, over a cup of tea in the staff room, I mentioned to two of the teachers how delightful I found Tom. While callous unemotional traits are rooted in genetics, environmental triggers are required to mutate the genes needed  Criticism[ edit ] Some evolutionary biologists criticize the factor structure that psychiatry supposes for callous and unemotional traits for lacking consistency with evolutionary continuity.
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