Locus of control is a theory in personality psychology referring to the extent to which individuals believe that they can control events that affect them. Understanding of the concept was developed by Julian B. Rotter in 1954, and has since become an aspect of personality studies. A person's "locus" (Latin for "place" or "location") is conceptualised as either internal (the person believes they can control their life) or external (meaning they believe that their decisions and life are controlled by environmental factors which they cannot influence).
Individuals with a high internal locus of control believe that events in their life derive primarily from their own actions; for example, if a person with an internal locus of control does not perform as well as they wanted to on a test, they would blame it on lack of preparedness on their part. If they performed well on a test, they would attribute this to ability to study.[1]. In the test-performance example, if a person with a high external locus of control does poorly on a test, they might attribute this to the difficulty of the test questions. If they performed well on a test, they might think the teacher was lenient or that they were lucky.
Those with a high internal locus of control exhibit better control of their behavior[citation needed], tend to be more politically involved[citation needed] and are more likely to attempt to influence others than are those with an external locus of control.[citation needed] They also assign greater likelihood to their efforts being successful, and more actively seek information concerning their situation.
Locus of control has generated much research in a variety of areas in psychology. The construct is applicable to fields such as educational psychology, health psychology or clinical psychology. There will probably continue to be debate about whether specific or more global measures of locus of control will prove to be more useful. Careful distinctions should also be made between locus of control (a concept linked with expectancies about the future) and attributional style (a concept linked with explanations for past outcomes), or between locus of control and concepts such as self-efficacy. The importance of locus of control as a topic in psychology is likely to remain quite central for many years.
Locus of control has also been included as one of four dimensions of core self-evaluations – one's fundamental appraisal of oneself – along with neuroticism, self-efficacy, and self-esteem. [2] The concept of core self-evaluations was first examined by Judge, Locke, and Durham (1997), and since has proven to have the ability to predict several work outcomes, specifically, job satisfaction and job performance.
http://en.wikipedia.org/wiki/Locus_of_control