I have no doubt that some (aggressive) medication will definitely work in cutting people's anger-outburst potential. But is the usual CBT-based anger management class effective? There's a 2013 BBC article which says the systematic evidence isn't too convincing, although (of course) practitioners say it works if the patient has enough commitment.
In particular, most doubt seem to be whether such class-based approach can affect real-life "heat of the moment" events/outburst. So what does the scientific evidence on this look like? Are there substantial well-designed studies on this, are there enough studies for meta-analyses etc.?