As mentioned, the sixteen personality types that are identifiable from a Myers-Briggs personality test are made up of four dichotomies. The first of these is extraversion-introversion which centres on how inwardly or outwardly focussed a person is. The second is sensing-intuition which is to do with the way different personalities take information on. The third is known as thinking-feeling, which relates to decision making. Finally, judging-perceiving is a dichotomy that relates to how people enjoy their outer life. Depending on how people respond to questions about themselves and choosing between the different options, their personality type can be established. Commonly, this is given as a four-letter code. For example, ENFP means someone who is extroverted, intuitive, feeling and perceiving.