This is a fun way to get students into pairs to practice reading, speaking, and listening, all while learning useful new vocabulary and common English questions.
It is aimed at Japanese high school level but could also work for Junior High School students.
I usually demonstrate this at the beginning by asking the whole class questions (majority rules), and don't reveal the personality types until the end.
Note: When students are in pairs, have one student read and the other simply listen. They can look at their vocabulary list or ask questions such as 'what is (word) in Japanese?'.