Threshold Concepts in Problem-based Learning provides a critical discussion and guidance for educational researchers, teachers, innovators and policy makers wanting to explore the interrelationship of PBL and threshold concepts. Beginning with an introduction to both areas and offering an overview of the current issues, this volume delivers 11 innovative, research-based chapters from around the world. It outlines the major threshold concepts faced by those disciplines that have adopted PBL, and then examines the impact of threshold concepts on student learning. What is unique about this text is the way it examines PBL as a pedagogy in which students get stuck in the learning process and the thresholds they encounter as they learn to adapt.