Inventory of Callous-Unemotional traits (ICU)

CU traits are defined by a lack of empathy, guilt, remorse and emotion (Moran et al., 2009). The ICU has three subscales: callousness, uncaring and unemotional.

There are five versions of the scale, relating to age (youth or preschool) and who completes the ICU (self, parent or teacher). The ICU is made up of statements with a 4-point Likert scale, ranging from 0 (Not at all true) to 3 (Definitely True), with higher scores indicating greater CU traits. Example items include statements such as: “I express my feelings openly”, “ I feel bad or guilt when I do something wrong” and “I do not care if I get in trouble”.