Bipolar Disorders is an international journal that publishes all research of relevance for the basic mechanisms, clinical aspects, or treatment of bipolar disorders. It intends to provide a single international outlet for new research in this area. Papers on biochemistry, physiology, neuropsychopharmacology, neuroanatomy, neuropathology, genetics, brain imaging, epidemiology, phenomenology, clinical aspects, and therapeutics of bipolar disorders will be considered. In particular, papers that provide leads for development of new therapeutic strategies for these disorders are specially welcome. The journal will also consider submissions on the topics of schizoaffective disorders, and recurrent depressive disorders, as these are cyclic disorders with areas of overlap with bipolar disorders. The journal will accept full-length research papers, brief reports, invited editorials, news and views, review articles, letters to the editor, rapid communications, and case reports of unusual interest. A special feature will be an international grand rounds section in which cases of special relevance will be discussed. The journal will be committed to rapid review and publication on manuscripts. In case of studies of unusual novelty and importance for the field, the review process will be completed within 30 days, for publication as rapid communications in the next issue of the journal.