Fewer but Worse: How Callous-Unemotional Traits Shape Treatment Response to Standard vs. Modified Time-Outs.

This study investigated whether a compliance-contingent, shortened time-out (TO) improves behavioral and emotional responses compared to a standard punishment-escalation TO among youth with conduct problems (CP) and varying callous-unemotional (CU) traits. Forty-six 7-12-year-olds in an 8-week summer treatment program completed a counterbalanced within-subject crossover: Standard TO (10-minute start; misbehavior doubled duration; fixed release criteria) vs. Modified TO (10-minute start; compliance enabled reduction to 5 minutes; additional supportive questions). Independent observers coded behavior and affect during TO episodes; staff logged TO characteristics. Analyses used zero-inflated negative binomial and mixed-effects models with covariates. Higher CU predicted fewer TO assignments but less compliance in the Standard TO condition. Contrary to predictions, the Modified TO condition showed higher aggression, lower compliance, and less calm behavior relative to Standard TO. Post-TO, higher CU was related to greater perceived aversiveness in Standard but not Modified TO. Making TO duration behaviorally negotiable did not enhance compliance and may signal rule flexibility for youth with CP and elevated CU traits. Findings of this study support emphasizing structured, consistent, non-negotiable consequences when treating youth with CP and CU.