Because of our birth order, we had different experiences growing up, and those experiences have shaped our behavior, our personalities and even our relationship with each other.
What do the President and First Lady have in common with Brad Pitt and Angelina Jolie?
Both power couples are compatible matches based on their birth order. Jennifer Hartstein shared more with "Early Show" co-anchor Erica Hill on how your place within the family not only affects your personality -- but your love life.
Using this site, you'll discover new things about yourself — including potential talents and abilities — that you may never have dreamed you had.Now you can get a personalized compatibility analysis custom written for you by William Cane, author of The Birth Order Book of Love.The deluxe compatibility analysis explains who your best romantic match is, and it tells you how compatibile you are with your current partner (if you're dating or considering dating someone in particular).This is based on the theory that opposites attract.It's also based on the theory, advanced by psychologist Walter Toman, that we're more comfortable with someone who matches the sibling position of our opposite-sex siblings.While other factors, such as age, race, and gender, all play a role in shaping personality, research indicates that is birth order.