The word ' psychology ' is derived from two Greek words , ' psyche ', meaning the mind, soul or spirit and ' logos ', meaning discourse or to study . The Greek capital letter Ψ (psi) is often used to represent the word ' Psychology '. Psychology is the science of mind and behavior. Psychology includes the study of conscious and unconscious phenomena, as well as feeling and thought. Or The scientific study of the human mind and its functions, especially those affecting behavior in a given context. T hink of the last time you took a bus or a train. Did you notice anyone else there? Did you strike up a conversation with a fellow passenger? If so, is that because you are naturally outgoing, or was there something particular to that situation that made you speak? You may have wondered why you have as you do. It is this curiosity about how people behave that drives psychologists, and they ask such questions all the time. ...