*Result*: Strategies to optimise active learning and reduce social loafing.

*This study was conducted with 126 students of a Psychology degree at a Spanish university. We combined different active methodologies of cooperative learning and randomly assigned the students to groups of four to work in weekly activities. Peers evaluated the oral presentations of their classmates, and then the professor and students provided feedback. At the end of the course, students completed an online questionnaire that assessed their self-perception of learning and improvement, of learning through their peers, of the usefulness of the contents and skills learned, and their satisfaction with deadlines and workload. The results showed that the combination of active methodologies led students perceive an improvement in skills, valuing them as useful, and showing their satisfaction even with workload and deadlines. The findings suggest that cooperative learning strategies, along with measures to mitigate social loafing, are effective in promoting students' engagement in their learning process. [ABSTRACT FROM AUTHOR]*