Tujuan penelitian ini adalah menjelaskan hubungan antara militant extremist mindset (MEM), ethos of conflict (EOC), dan self-uncertainty. Penelitian ini terdiri dari tiga studi dengan hipotesis utama bahwa EOC memediasi hubungan self-uncertainty dan MEM pada konteks konflik Aceh paska perjanjian damai. Studi awal mengeksplorasi representasi sosial mengenai konflik Aceh, musuh Aceh, dan perdamian di Aceh, yang mengkonfirmasi empat societal beliefs dari EOC pada masyarakat Aceh. Studi 1 menunjukkan terdapat hubungan postitif antara EOC dan MEM pada partisipan Aceh (N=95). Studi 2 dengan partisipan dari Provinsi Aceh (N=284) menunjukkan bahwa EOC memediasi secara penuh hubungan self-uncertainty dan MEM beserta dimensi Nastiness dan Grudge. Hasil penelitian ini menunjukkan self-uncertainty hanya bisa memprediksi mindset ekstremisme melalui EOC.

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The purpose of this study is to explain the relationship between militant extremist mindset (MEM), ethos of conflict (EOC), and self-uncertainty. This study consists of three studies with the main hypothesis that EOC mediates the relationship between self-uncertainty and MEM in the context of the Aceh conflict post peace treaty. The preliminary study explores social representations of the Aceh conflict, Aceh’s adversary, and peacebuilding in Aceh, confirming four societal beliefs from EOC in Acehnese society. Study 1 shows a positive relationship between EOC and MEM from Aceh participants (N=95). Study 2 with participants from Aceh Province (N=284) shows that EOC fully mediates the relationship between self-uncertainty and MEM including Nastiness and Grudge dimension. The results of this study show that self-uncertainty can only predict extremist mindset through EOC.