n this article, we present results from an interdisciplinary research project aimed atassessing consciousness in dreams. For this purpose, we compared lucid dreams with nor-mal non-lucid dreams from REM sleep. Both lucid and non-lucid dreams are an importantcontrast condition for theories of waking consciousness, giving valuable insights into thestructure of conscious experience and its neural correlates during sleep. However, the pre-cise differences between lucid and non-lucid dreams remain poorly understood. The con-struction of the Lucidity and Consciousness in Dreams scale (LuCiD) was based ontheoretical considerations and empirical observations. Exploratory factor analysis of thedata from the first survey identified eight factors that were validated in a second surveyusing confirmatory factor analysis: INSIGHT, CONTROL, THOUGHT, REALISM, MEMORY,DISSOCIATION, NEGATIVE EMOTION, and POSITIVE EMOTION. While all factors areinvolved in dream consciousness, realism and negative emotion do not differentiatebetween lucid and non-lucid dreams, suggesting that lucid insight is separable from bothbizarreness in dreams and a change in the subjectively experienced realism of the dream