Callous-unemotional traits (CU) are distinguished by a persistent pattern of behavior that reflects a disregard for others, and also a lack of empathy and generally deficient affect. The interplay between genetic and environmental risk factors may play a role in the expression of these traits as a conduct disorder (CD). While originally conceived as a means of measuring the affective features of psychopathy in children, measures of CU have been validated in university samples and adults.[1][2][3]
^Kimonis ER, Branch J, Hagman B, Graham N, Miller C (March 2013). "The psychometric properties of the Inventory of Callous-Unemotional Traits in an undergraduate sample". Psychological Assessment. 25 (1): 84–93. doi:10.1037/a0029024. PMID22775408.
^Awada SR, Ellis RA, Shelleby EC, Orcutt HK (February 2022). "Gender Differences in Callous Unemotional Trait Profiles in an Undergraduate Sample". Journal of Aggression, Maltreatment & Trauma. 31 (7): 888–909. doi:10.1080/10926771.2022.2038753. ISSN1092-6771. S2CID246897749.