There's your biological age, and then there's your mental age. The latter has more to do with your likes and dislikes and how you act and feel. Do you think older or younger than your actual age? Take this quiz to find out! And please don't take your result too seriously - many adults wish they could think like kids again! And if you think like an adult at a young age, don't think you're "old" - you're just WISE!