Abstract:
:Callous-unemotional (CU) traits comprise the core symptoms of psychopathy, yet no study has estimated the heritability of CU traits in a community sample of children using an instrument designed solely to assess CU traits. The current study uses data from 339 twin pairs aged 9-14 to examine the reliability and heritability of the parent-report Inventory of Callous-unemotional Traits (ICU) at two assessments approximately 3 weeks apart. Time-specific measurement error was taken into account to obtain a more accurate estimate of the heritability reflecting the latent liability to CU traits. Test-retest reliability was 0.84 and heritability at visit 1 was 39%. The heritability of the latent liability to CU traits was 47%. This latent liability contributed 79% of the variance in ICU score at visit 1 and visit 2. This is the first study to account for measurement error while examining the heritability of CU traits, furthering our understanding of psychopathy in children.
journal_name
Behav Genetjournal_title
Behavior geneticsauthors
Moore AA,Carney D,Moroney E,Machlin L,Towbin KE,Brotman MA,Pine DS,Leibenluft E,Roberson-Nay R,Hettema JMdoi
10.1007/s10519-016-9831-1subject
Has Abstractpub_date
2017-03-01 00:00:00pages
141-151issue
2eissn
0001-8244issn
1573-3297pii
10.1007/s10519-016-9831-1journal_volume
47pub_type
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