English: The four questions on either side of the chart measure the four letters of the Myers-Briggs type. The chart in the middle shows the traits of the 16 personalities. Personalities with the same background colour have the same dominant (primary) function. For example, the dominant function of ISTP and INTP is Introverted Thinking (Ti). Personalities with the same text colour have the same auxiliary (secondary) function. For example, the auxiliary function of INFP and INTP is Extraverted Intuition (Ne).