In Consciousness: a comprehensive reference, 2nd edition. Elsevier. pp. 1-14. forthcomingThis article surveys research on the phenomena of change blindness and inattentional blindness, two striking forms of perceptual failure caused by the diversion of visual attention. It outlines the extent to which these failures can occur and their implications, both in the lab and in everyday life. It also outlines the extent to which these phenomena are connected to visual attention and other known mechani