Whatever you say, say nothing: Individual differences in counter interrogation tactics amongst a field sample of right wing, AQ inspired and paramilitary terrorists

Principal component analysis of an operational field sample of 181 police interrogations with terrorist suspects identified five counter interrogation factors: passive (refusing to look at interviewers, remaining silent); passive verbal (monosyllabic response, claiming lack of memory); verbal (discussing an unrelated topic, providing well known information, providing a scripted response) with two single item components: retraction of previous statements and no comment. Analysis revealed significant differences in the use of counter interrogation tactics between terrorist groups, with paramilitary suspects using more passive, verbal and no comment tactics than right wing and international terrorists. International terrorists made significantly more use of retraction tactics than right wing and paramilitary groups.