Whether you're the eldest, middle, youngest, or only child, your birth order has a dramatic effect on the type of personality you develop. Most people cultivate these birth order characteristics early on, as they discover who they are, what they want to be, and how they will choose careers, relationships, and much more. Take Tickle's Birth Order personality Test and find out what effect your birth order has had on your personality! You may also have personality characteristics that defy your birth order, and we can tell you why. What you discover may surprise you!