That may sound obvious, but some parents use their children to meet their own emotional needs -- and seem unaware that they're doing so.
A group of Dutch researchers found that one of the most important factors in predicting parenting quality was the level of understanding of children's unique interests and needs, along with a willingness to consider that perspective as distinct from the parent's own. Canadian researchers discovered that parents who were better able to "accurately perceive their [teenage] children's thoughts and feelings during a disagreement" ended up having fewer conflicts -- or at least a more satisfactory resolution of the conflicts that did occur.