Microgenesis refers to the short-term development of cognition, from inception to final representation or expression, as observed through qualitative changes over time. It involves studying the origin and history of a particular event or learning process as it unfolds. Vygotsky recognized two types of microgenesis: the formation of a psychological process through repeated trials, and the unfolding of a perceptual or conceptual act over milliseconds. Microgenesis provides a lens for understanding local, contextual learning between an expert and novice as they interact, such as when a new concept is acquired through social means.