Are personality tests true? Millions of people take personality tests. They say that it helps them understand themselves. But others think that tests are rubbish.
How best to find out who you really are
Four types: From Hogwarts house to "Apple or Banana", personality tests have become popular online. Glossary
Hogwarts - The school for witches and wizards attended by Harry Potter in the fictional series by JK Rowling.
Personality - The type of person you are, shown by how you behave, feel and think.
Psychology - The scientific study of the mind and behaviour.
Honest - Being truthful in what you say and do.
Slytherin - One of the four houses at Hogwarts, the fictional school attended by Harry Potter. Slytherin has a reputation for producing evil witches and wizards.