Irvin Biederman is a prominent American psychologist known for his work in the field of cognitive psychology, particularly in visual perception and object recognition. He is best known for developing the Recognition-by-Components theory, which explains how people identify objects by breaking them down into basic geometric shapes called geons. This theory has significantly influenced the understanding of how the human brain processes visual information. Biederman has contributed extensively to the study of how we perceive and recognize objects in our environment. His research has implications for various fields, including artificial intelligence, neuroscience, and human-computer interaction. Through his work, Biederman has helped to advance our understanding of cognitive processes related to vision and perception.