Children are on a journey in which they are learning self-control and other features of wisdom. Some children pick it up quickly; others learn it gradually after years of creative and patient parenting. Parents know that wisdom does not come immediately, so they are patient with the process of change.
If the child seems untouched by swift discipline, consider what might be more effective in the future. At the child's next explosion of blind rage, if previous discipline didn't help, choose to do nothing at the moment. Handle the situation when calm prevails [when he is open to wisdom].
Edward T. Welch, The Journal of Biblical Counseling, Summer 2007 [not available on-line]