 PREDICTORS Parents Resources for Decreasing the Incidence of Change Triggered Temper Outbursts aims to evaluate web-based training packages for caregivers of children who show frequent temper outbursts following changes to their routines and plans. The training packages will teach caregivers how to apply strategies that aim to reduce the number of temper outbursts that the children show following changes, as well as making any outbursts they do show less severe less functionally impairing. 