lecture2 (10) - Major depressive disorder ENVIRONMENTAL....

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Major depressive disorder ENVIRONMENTAL. Environmental theories of the etiology (causation) of MDD emphasize the role of external events in triggering depression. According to this perspective, people become depressed primarily due to unfortunate circumstances that are difficult to change. In some cases, these misfortunes may include environmental disasters or personal losses; but such other factors as low socioeconomic status, oppression associated with one's sex or race, or unpleasant or frustrating relationships are also thought to contribute to depression. BIOLOGICAL. Ancient medicine alleged that one's state of mind was related to the presence of specific "humors," or fluids, in the body, and various theories have emerged since the eighteenth century regarding possible constitutional factors in humans that affect mood. In recent years, researchers have found numerous abnormalities in the neuroendocrine systems, neurotransmitters , and neuroanatomy of the brains of both children and adults with MDD, as well as strong evidence for genetic factors in MDD. Levels of cortisol, a hormone associated with the human "fight-or-flight" response, have long
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/28/2012 for the course PSY PSY2012 taught by Professor Scheff during the Fall '09 term at Broward College.

Ask a homework question - tutors are online