The effect of variability on learning is recognized in many fields: learning is harder when input is variable, but variability leads to better generalization of the knowledge we learned. In this review, researchers bring together over 150 studies on variability across domains, including language acquisition, motor learning, visual perception, face recognition and education, shedding light on the underlying mechanisms behind variability. https://www.sciencedaily.com/releases/2022/05/220513113216.htm
