Callous-unemotional (CU) traits comprise a temperament dimension characterized by low empathy, interpersonal callousness, restricted affect and a lack of concern for performance. CU traits are the hallmark feature of psychopathy in youth and are associated with more varied, severe and stable antisocial behavior
Child Background Questionnaire
A brief child-report questionnaire assessed child age, gender, ethnicity, eligibility for free school meals, English as an additional language and family structure.
Teacher Background Questionnaire
This questionnaire assessed teacher report of age, gender, ethnicity and years teaching experience.
Inventory of Callous-Unemotional Traits (ICU; Frick, 2004)
Social Responsiveness Scale–Brief (SRS-Brief; Moul et al., 2015)
Strengths and Difficulties Questionnaire (SDQ; Goodman, 1997)
Multidimensional Assessment Profile of Disruptive Behavior (MAP-DB; Wakschlag et al., 2010)
Sensitivity to Punishment and Sensitivity to Reward Questionnaire for Children (SPSRQ-C; Colder and Connor, 2004)
Teacher-Student Relationship Quality