Cognition

Numerous studies show that bipolar disorder affects a patient's ability to think and perform mental tasks, even in states of remission. Deborah Yurgelun-Todd of McLean Hospital in Belmont, Massachusetts has argued these deficits should be included as a core feature of bipolar disorder.

By the same token, research by Kay Redfield Jamison of Johns Hopkins University and others has attributed high rates of creativity and productivity to certain individuals with bipolar disorder