People with sleep disorders commonly have a misperception about their actual sleep behavior. A research group led by Karin Trimmel and Stefan Seidel from MedUni Vienna’s Department of Neurology (Outpatient Clinic for Sleep Disorders and Sleep-Related Disorders) analyzed polysomnography results to identify the types of sleep disorder that are associated with a discrepancy between self-reported and objective sleep parameters and whether there are any factors that influence this. The main finding: irrespective of age, gender or screening setting, insomnia patients are most likely to underestimate how long they sleep. The study has been published in the highly regarded Journal of Clinical Sleep Medicine.