This is more of a text book for people interested in visual perception and cognitive psychology. The foundation of the work demonstrates that conscious perception requires focused attention. More specifically that visual attention is the gateway to conscious perception and that without attention, our representations of the visual world are extremely volatile. Indeed, despite the common folk belief in, and the ‘‘subjective impression’’ of, a coherent and richly detailed world, the empirical research described in this text demonstrates that we actually perceive much less of the world than we think we do.