Trying to outdo your brother or sister during childhood is part and parcel of a family environment, but exactly how competitive are you and your sibling?
Our recent research found that nearly 40% of UK adults still feel a rivalry with their brothers and sisters, while more than one in ten (11%) confess to feeling upset if their sibling is more successful in life than them!
But what about you? Take our quiz below to discover just how competitive you are with your sibling!
How did you get on? Tweet us your stories of sibling competitiveness at @OOLTrust