Kids' perception of parents' favoritism counts more than reality

We all know which kid Mom and Dad liked best, and odds are you're thinking it's not you.

But does that really make a difference? It can, researchers say, but not always the way you might think.

Less-favored children are more likely to be using drugs, alcohol and cigarettes as teenagers, according to researchers at Brigham Young University in Provo, Utah.

But what matters is not how the parents actually treat the children, but how the kids perceive it.