Since Celia Green wrote her original study of lucid dreaming in 1968, interest in the field has spread and new research findings have been generated. Lucid Dreaming is both a review of these developments and a new contribution to the theoretical interpretation of the subject. Three main areas are covered: the phenomenology of lucid dreams (what it is like to be asleep and dreaming and to realise that you are doing so); the relationship between lucid dreams and other hallucinatory states; and the practical applications of lucid dreaming. Containing much fascinating first-hand case material, Lucid Dreaming illustrates how lucid dreams may be developed, and how the dreamer may acquire a degree of control over them.