This is an observational and prospective study aimed at identifying risk and resilience factors for cognitive impairment in BD. The investigators will enrol 85 participants with bipolar disorder. The assessment period is ten days. At inclusion, the investigators will collect information on other psychiatric conditions, known somatic diseases, symptom levels of depression, and symptoms of hypo-/mania. Insomnia severity and risk factors for metabolic syndrome will be assessed. Secondly, the investigators will examine sleep and activity with both subjective and objective measures for ten days. Third, a newly developed web-based neuropsychological test protocol will be used shortly after assessment of sleep and activity to test cognitive function. Fourth, alcohol use, substance use and biological rhythms will be assessed. Lastly, the investigators will retest cognitive function and symptom levels five years after enrolment.
