Marital strife linked to infants' sleeping woes

(image: Paul Goyette from Chicago, USA, via Wikimedia Commons)

Infants who are exposed to marital discord are more likely to have trouble sleeping during infancy and when they approach the toddler stage, a study shows.

Researchers evaluated more than 350 families when their babies were 9 months old and 18 months old. All the babies had been adopted because the scientists wanted to eliminate the chance that any behaviors between parents and kids weren't caused by shared genes or personality characteristics. Read on.