are you an eldest child ? if so you could be a natural leader eldest children are often ambitious punctual and hard-working and regularly score higher marks on achievement tests on the negative side eldest children often feel jealous of their younger siblings who often seem to get better treatment from their parents first- born can appear to be know-it-all who frighten other people with their bossy insensitive attitude so maybe it not surprising that more than half of US presidents have been first-born