The Mood Zoom questionnaire rates anxiety, elation, sadness, anger, irritability, and energy on a 7-point scale.
Cognitive reserve in bipolar patients gives a possible explanation for the differences seen among patients in their ability to perform in neurocognitive tests.
Researchers observe a cohort effect for earlier age at onset of bipolar disorder. Bipolar disorder is also more common in patients with a family history of unipolar depression and bipolar disorder.
Treatment initiated in the early stages of bipolar disorder is more effective than treatment in later stages.