“…Several studies have shown that there is a relationship between critical thinking and academic achievement (Semerci,2011;Ramos et al, 2013;Sherafat, 2015), although, Aksu & Koruklu (2015) have argued that there is no significant relationship between critical thinking dispositions and academic achievement. In contrast, while some studies suggested that logical thinking predicts students' achievement (Vázquez & Anglat, 2017;Gurcay & Gulbas, 2018;Rakhmawan, Firman, Redjeki, & Mulyani, 2018), other studies pointed in the opposite direction (Hejnová et al, 2018;Riyanti, Suciati, & Karyanto, 2019). There is a limited agreement between studies, about what thinking skills predict students' achievement?…”