• Summary
  • Contents
  • Subject index

Via 100 entries, 21st Century Psychology: A Reference Handbook highlights the most important topics, issues, questions, and debates any student obtaining a degree in the field of psychology ought to have mastered for effectiveness in the 21st century. This two-volume reference resource, available both in print and online, provides an authoritative source to serve students’ research needs with more detailed information than encyclopedia entries but without the jargon, detail, or density found in a typical journal article or a research handbook chapter. Students will find chapters contained within these volumes useful as aids toward starting research for papers, presentations, or a senior thesis, assisting in deciding on areas for elective coursework or directions for graduate studies, or orienting themselves toward potential career directions in psychology.

Mood Disorders: An Overview
Mood disorders: An overview

Mood and emotion add depth and meaning to our lives and to our interactions with other people. Our moods change from day to day, sometimes quite unexpectedly. We all suffer from “the blues” occasionally, and it is hoped we all experience periods of blissful happiness. It is important, however, to differentiate between mood disorders, formerly known as affective disorders, and normal mood fluctuations.

The purpose of this chapter is to provide an overview of current as well as historical conceptualizations of mood disorders. Diagnostic criteria, etiological theories, and treatment strategies are discussed.

Consider the following individuals. Which of them appear to be suffering from a mood disorder?

Jon, 21, was arrested and charged with careless and reckless operation of a motor ...
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