Type 1: They like to be alone. They like being quiet and quiet environment. They prefer staying in because there is too much stimulation outside. They get tired very quickly when they are exposed to the outdoor too long. They can be in their room as long as possible without getting bored. There’s always something going on their mind or their desk.

Type 2: They like to be alone. They are not necessarily quiet. They get easily bored. They like to go out and explore – on their own. They like traveling and trying out new things but often wear headphones so that they can keep the experiences to themselves without interacting other people. They don’t mind stimulation from the world – as long as they have enough privacy to digest it by themselves.