The parents of ordinary children had an average of six rules, like specific schedules for homework and bedtime. (inc.com)
While this is a parenting philosophy that can apply to even ordinary children, parent management training helps parents understand their child's capabilities and then develop appropriate expectations based on these abilities. (wisegeek.com)
As has been pointed out, it would have been harder for ordinary children to not let slip that the family was hiding Jews. (religion.blogs.cnn.com)