What Is Personality?
By Kendra Cherry
http://psychology.about.com/od/overviewofpersonality/a/persondef.htm
Almost everyday we describe and assess the personalities of the people around us. Whether we realize it or not, these daily musings on how and why people behave as they do are similar to what personality psychologists do.
While our informal assessments of personality tend to focus more on individuals, personality psychologists instead use conceptions of personality that can apply to everyone. Personality research has led to the development of a number of theories that help explain how and why certain personality traits develop.
Definitions of Personality
While there are many different theories of personality, the first step is to understand exactly what is meant by the term personality. The word personality itself stems from the Latin word persona, which referred to a theatrical mask work by performers in order to either project different roles or disguise their identities.
A brief definition would be that personality is made up of the characteristic patterns of thoughts, feelings and behaviors that make a person unique. In addition to this, personality arises from within the individual and remains fairly consistent throughout life.
Some other definitions of personality:
"Personality refers to individuals' characteristic patterns of thought, emotion, and behavior, together with the psychological mechanisms -- hidden or not -- behind those patterns. This definition means that among their colleagues in other subfields of psychology, those psychologists who study personality have a unique mandate: to explain whole persons."
(Funder, D. C., 1997)
"Although no single definition is acceptable to all personality theorists, we can say that personality is a pattern of relatively permanent traits and unique characteristics that give both consistency and individuality to a person's behavior." (Feist and Feist, 2009)