The idea that young children under four should not spend any nights away from their primary attachment figure usually the mother, is a hotly contested idea.

English parenting guru Penelope Leach has quoted Australian researchers in her new book about separated families, but the researchers say they are unhappy with her interpretation of their research.

What does this Australian research actually say and how is it being used in the Family Court? Click on the link below to hear the full audio of this discussion.