Examination of results of engagement in the FCU also revealed a dosage effect associated with the number of FCU feedbacks the caregivers received. We found intervention effects increasing from the moderate range to the large range associated with increasing levels of engagement. Families who engaged in the FCU at child ages 2, 3, and 4 (47.4%) showed the greatest reductions in problem behaviors from ages 2 through 5, compared with results for a latent class of engagers randomly assigned to the control condition. In contrast to results from previous outcome studies of this intervention model, parents who were somewhat less at risk with respect to teenage parenthood and observed positive behavior support were more likely to engage in all three of the offered FCUs. However, maternal depression was associated with a higher level of engagement in the FCU. Given that the FCU is voluntary and involves consistent participation over time, the profile of parents who engaged makes sense. However, the longitudinal pattern of nonengagers is similar to that found in previous studies (e.g., Connell, Dishion, Yasui, & Kavanagh, 2007; Stormshak
