Mothers can study birth control options, monitor their cycles and try to carefully map out family expansion, but surprise pregnancies still happen.

Though most parents joke about it later, a new study in the journal of Child Development reveals that unexpected babies – both those that weren't planned at all and those that did not occur when their parents expected them – receive "fewer resources than intended siblings," including parental support and learning materials like books and puzzles.  The study goes on to say that "Parents’ stress and lack of patience may be directed explicitly toward an unwanted child."

Would an unplanned pregnancy alter your treatment of that offspring?