Depression: This essay is concerned with the disorder of Major (unipolar) Depression. Firstly, differences between sociodemgraphic groups will be addressed. Secondly, a summary of research literature will be discussed and finally, differences in prevalence between sociodemographic groups will be approached. All of us have experienced moods of depression, sadness, or the blues in our lives. We may have these feelings in response to a death in the family, the breakup of a relationship, falling short of a goal, and the like. The presence of a ....