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.
Major depressive disorder, also called clinical depression or often simply depression, is a common, long-lasting and diverse psychiatric syndrome that significantly affects a person's thoughts, behavior, feelings and sense of well-being.