In 1992, author Mary Jane Scherdin used the Myers-Briggs Type Indicator (MBTI) instrument to survey personality traits of
1,600 librarians. The study resulted in an
overwhelming number of librarians displaying personalities consistent with being Introverted / Sensing / Thinking / Judging (I/S/T/J) followed by Introverted / Intuitive / Thinking / Judging (I/I/T/J).
She conducted this survey in response to a 1984 survey done by the Center for Applications of Psychological Type which had concluded that librarians were Introverted
/ Sensing / Feeling / Judging