| Literature DB >> 27909830 |
Ashlee A Moore1,2, Dever Carney3, Elizabeth Moroney4, Laura Machlin4, Kenneth E Towbin4, Melissa A Brotman4, Daniel S Pine4, Ellen Leibenluft4, Roxann Roberson-Nay3,5, John M Hettema3,5.
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.Entities:
Keywords: Callous-unemotional traits; Heritability; Measurement model; Reliability; Twins
Mesh：
Year: 2016 PMID： 27909830 PMCID： PMC5305430 DOI： 10.1007/s10519-016-9831-1
Source DB: PubMed Journal: Behav Genet ISSN： 0001-8244 Impact factor: 2.805