Do you panic easily? Do you often feel blue? Do you have a sharp tongue? Do you get chores done right away? Do you believe in the importance of art?
If ever you've answered questions like these on one of the free personality quizzes floating around Facebook, you'll have learned what's known as your Ocean score: How you rate according to the big five psychological traits of Openness, Conscientiousness, Extraversion, Agreeableness and Neuroticism.
The Secret Agenda of a Facebook Quiz - The New York Times