Sebastian Leitner

Sebastian Leitner was a German psychologist best known for developing the Leitner System, an efficient method for learning and memorization. This system organizes flashcards into groups based on how well you know the material. Cards you understand are moved to less frequent review groups, while harder cards stay in more active review groups. This spaced repetition technique optimizes memory retention by focusing on challenging topics and reducing unnecessary review of known information. Leitner’s approach is widely used in education and self-study to improve learning efficiency and long-term recall.