This study presents an active learning methodology based on the development and analysis of case studies by college students and explores its effects on academic performance and on students' capacity of understanding and analysing human behaviour. A group of 54 students who were taking the course Social Psychology at the University of Barcelona developed written stories where psychosocial concepts were represented. Results showed that participants, after developing their own case studies, improved their ability to identify and explain theoretical concepts included in case studies created by the teaching team. The proposed teaching methodology appears to enhance their ability to understand and analyse human behaviour, helping students to integrate theory with reality.