Abstract: Traditional and Cooperative Learning are different approaches used in education. Both had shown themselves to be effective, with Traditional Learning being the predominant method used for a long time. On the other hand, Cooperative Learning became an innovative approach capable of improving education results and cultivating essential skills in students. This research determines the significant effect of Cooperative Learning on the subject proficiency of Psychology students. The researchers conducted an assessment test on 60 participants of Psychology students to determine the effectiveness of Cooperative and Traditional learning. The results showed that Cooperative Learning has no significant effect on the students’ subject proficiency. This implies that Traditional Learning holds an advantage when it comes to teacher-student interaction as information is directly conveyed.