Children raised in a two-parent families do best at school, a conference has been told.
A "world family map" compiled by the Child Trends research centre was presented at the World Congress of Families in Sydney on Thursday.
It examined families in 45 countries around the world, including Australia.
One of the report's authors, Dr Brad Wilcox from the University of Virginia's National Marriage Project, said it showed that in most of the developed world children are more likely to thrive academically when they have two parents at home.
Dr Wilcox said 80 per cent of Australian children were growing up in a two-parent family, which he said gave them access to the "love, security, attention and financial resources that brings".