Planning ahead can help prevent tantrums during outings with children who have autism spectrum disorders. Parents should practice simulated outings at home to prepare their child for what to expect. When first doing real outings, they should be short and simple with clear expectations and boundaries. It's important to consider the child's needs by planning appropriate errands for their participation or leaving them with a caregiver if necessary. Parents also need to prepare themselves by dividing attention between the child and their tasks, and not rewarding good behavior to avoid frustration.