This category refers to a person's decision-making style. The perceiving person prefers flexibility and open-ended possibility, whereas the judging person prefers order and control. After a person takes the MBTI test, that person is assigned one letter from each of the four categories, resulting in a designation such as ISTJ or ENTJ . Test results might indicate such people are introverts even though most business associates would classify them as extroverts. ISTJs comprise 25-40 percent of software developers.
Programmers are indeed introverts.
About 60 percent of software developers have attained at least a bachelor's degree, compared to about 25 percent of the general population. Eighty to ninety percent of software developers are T s, compared to about 50 percent of the general population. Compared to the average, T s are more logical, analytical, scientific, dispassionate, cold, impersonal, concerned with matters of truth, and unconcerned with people's feelings. Programmers are approximately evenly split between S s and N s, and the difference between the two will be immediately recognizable to most software developers. N s are inventive, live in the world of possibility and theories, like to generalize, and like to explore many alternative ideas.