Definition of "psychology" []

• The science that deals with mental processes and behavior. (noun)
• The emotional and behavioral characteristics of an individual, group, or activity: the psychology of war. (noun)
• Subtle tactical action or argument used to manipulate or influence another: He used poor psychology on his employer when trying to make the point. (noun)
• Philosophy The branch of metaphysics that studies the soul, the mind, and the relationship of life and mind to the functions of the body. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The word "psychology" comes from the Greek word psyche meaning "breath, spirit, soul", and the Greek word logia meaning the study of something."
• "His Ph.D. in psychology is in research methodology."
• "Karen Daniels has her M.A. in psychology, is an author, mom, creativity lecturer, and online content specialist who writes Zen Copy, a blog which promotes creative growth and achieving success through effective online writing."