Do we need a training to change our behavioral pattern ?

The Art of Living foundation run by Sri Sri Sri Ravishankar has embarked on a big project to train and bring changes in the behavioral pattern of the convicts lodged in various jails across the country. An MOU was signed to this effect and such training centers would be opened at 17 central jails across the country to train 8200 prisoners. Now my question is that the convicts were lodged in jails for their different crimes and how come a training can bring change in their behavioral pattern. As it is some would have changed their attitude while languishing in jails for many years ?