 While somewhat similar to lucid dreaming, dream incubation is simply focusing attention on a specific issue when going to sleep.In a study at Harvard Medical School, Dr. Deirdre Barrett had her students focus on a problem, such as an unsolved homework assignment or other objective problem, before going to sleep each night for a week.She found that it was certainly possible to come up with novel solutions in dreams that were both satisfactory to the dreamer and rated as objectively solving the problem by an outside observer.