A subjective performance evaluation typically relates to intangible employee qualities and is based on subjective feedback from the manager as opposed to objective, measurable feedback.
In major depression, the most prominent symptom is a severe and persistent low mood, profound sadness, or a sense of despair. The mood can sometimes appear as irritability. Or the person suffering major depression may not be able to enjoy activities that are usually enjoyable.
There are several different types of clinical depression (mood disorders that include depressive symptoms): 1  Major depression is an episode of change in mood that lasts for weeks or months. It is one of the most severe types of depression.