Peak Negative Affect Ratings across Time, by Treatment Condition. Post-hoc contrast tests indicate that youth in cognitive behavioral therapy (CBT) reported lower levels of peak negative affect relative to youth in child-centered therapy (CCT) following Session 8, specifically, across the sampling weeks that occurred after the introduction of exposure in CBT (Session 12 and Post-treatment), t(1697.307) = 4.44, p < .001; Cohen’s d = .19. No group differences were observed in ratings of peak negative affect before the introduction of exposure in CBT (Baseline, Session 4, and Session 8), t(136.238) = .082, p = .935, Cohen’s d = .02. Error bars represent the standard error group differences in Peak negative affect at each time point.