Through existing relationships with leaders of the Religious Rehabilitation Group (RRG), this research team had the opportunity to collect unique data from detainees who had been involved with Jemmah Islamiya, as well as from family members of these detainees. Data collection involved:
(1) structured interviews with the clerics carrying out the program,
(2) content analysis of their manuals and printed materials used in the de-radicalization work,
(3) structured interviews with imprisoned and released terrorists and insurgents,