The term "lucid dream" describes a dream during which the dreamer is aware of being in a dream while the dream is ongoing. Our investigation focused on the frequency of the lucid dream experience and its relationship to mental health, behavioural control (TPF; Becker, 1989), decision behaviour (EQS; Wolfram, 1982), and spatial abilities (3DW; Gittler, 1990). Data analysis of 89 subjects...