Alain Morin of Mount Royal College has released another interesting paper on consciouness. Titled, Levels of consciousness and self-awareness: A comparison and integration of various views (PDF format), it attempts to bring some order to the wide range of theoretical models used to explain levels of consciousness. While the idea of "level of consciousness" has been around for more than a century, few theorists bother to explain their models with reference to previous models, while at the same time, they introduce new terms and concepts that add to the confusion. Alain compares nine theoretical models to find convergences, divergences, and especially important concepts that occur most frequently.