The nature and nurture of primary and secondary callous–unemotional traits: evidence from two independent twin samples
These findings support theories suggesting that co-occurring anxiety may distinguish CU traits with different origins: CU traits with higher anxiety appear more influenced by nonshared environmental factors-potentially including adversity-and may show weaker genetic influence. Assessing for co-occurring child anxiety is likely important for diagnosing and personalizing treatments among children with CU traits.
Authors
- Luke W. Hyde (ORCID: https://orcid.org/0000-0002-5947-7896)
- Essi Viding
- Rachel Tomlinson
- Patrizia Pezzoli (ORCID: https://orcid.org/0000-0002-2425-5249)
- Kelly L. Klump (ORCID: https://orcid.org/0000-0003-1790-9264)
- Stephane A. De Brito
- S. Alexandra Burt
Institutions
- University of California, San Francisco (US)
- University of Michigan (US)
- University College London (GB)
- University of Birmingham (GB)
- Michigan State University (US)
Publication Details
- Journal
- Journal of Child Psychology and Psychiatry
- Published
- 2026-01-05
- DOI
- https://doi.org/10.1111/jcpp.70107
- Primary Topic
- Psychopathy, Forensic Psychiatry, Sexual Offending
- Type
- article
- Field-Weighted Citation Impact
- 0.00