The purpose of this study is to test two on-line interventions for families of young children who have experienced moderate or severe traumatic brain injury (TBI). This project builds upon the investigators' previous research by modifying the online intervention content to address the needs of young children with TBI. The goal of this project is to develop an intervention that will encourage positive parenting behaviors, improve child behaviors, and reduce parent distress and burden following TBI. The investigators hypothesize that the intervention groups will exhibit more effective parenting skills as well as better child functioning and lower levels of parental distress at follow-up than will the active comparison group.