This just in..

From the Department of the Completely Obvious:

Child's sleep disorder affects parents too
NEW YORK (Reuters Health) - When children have sleep problems, their parents -- especially mothers -- often have sleep-deprived nights too, research shows.

In a study of families with children seen at a sleep clinic, researchers found that when children had multiple sleep problems, their parents were more likely to have daytime drowsiness.

Gee. Ya think?
I don't know who paid for this study but I've got some nice investment property to sell them.