| Summary: | David W Morris Department of Psychiatry, The University of Texas Southwestern Medical Center, Dallas, TX, USACorrespondence: David W MorrisDepartment of Psychiatry, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., NE5.106, Dallas, TX 75390-9127, USATel +1214-648-7085Fax +1214-645-2786Email DavidW.Morris@UTSouthwestern.eduAbstract: An approach viewing anxiety and depression as extensions of normal adaptive biologic drives is discussed. Anxiety is viewed as the result of an underlying biological drive to preserve and maintain our wellbeing. At the extremes, if unresolved, this drive can be maladaptive, particularly if activated over prolonged periods of time. This paper proposes that depression is the result of a biological drive that mediates the effects of maladaptive levels of anxiety. These two processes are thought to be acting simultaneously. When operating in the normal range, these drives are helpful; in the extremes, they are associated with impairment. Over time, if unresolved, symptoms of anxiety will begin to become associated with increasing levels of depression.Keywords: depression, anxiety, adaptive affect, stress
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