Supplementary Information
SECONDARY
Objective: Recent efforts to improve outcomes for young children with conduct problems and callous-unemotional (CU) traits involve adapting treatments to meet the unique needs of this subgroup. However, these efforts have ignored accumulating evidence for distinct primary and secondary variants within the CU subgroup. Existing treatment adaptations uniformly target risk factors associated with primary CU traits and no studies have investigated variant-specific patterns of responsiveness to treatment adaptations among young children with CU-type conduct problems. Method: Participants were 45 families with a 3- to 7-year-old clinic-referred child (The online version contains supplementary material available at 10.1007/s10802-023-01112-6.