Young drivers with developmental disabilities may be at increased risk for crashes due to impairments commonly associated these conditions. The first objective of this research is to gauge the association between confirmed incidences of distracting behaviors and inattention to the driving task by teen drivers with crash and near crash involvement, in relation to their incidence during baseline events; and to determine whether these incidences contribute to crashes and near crashes, and if and how these relationships change with increasing driving experience. The second objective of this research is to compare exposure-based crash and near crash involvement rates as well as self-reported risky driving behaviors for teen drivers with higher versus lower ADHD screen scores, taking into account the potential influence of other behavioral and demographic factors captured in NDS data.