London - Mothers unhappy with their male partners spend more time talking to their first child than those in happy relationships.
But the finding applies only if it is a boy, according to a study, as moms in unhappy marriages did not speak more to girls.
The study was based on recordings of conversations between parents and their babies. Researchers also found moms were much more chatty than dads when looking after their baby.
The research is significant as exposure to speech is thought to help a child develop language ability. However, the researchers from Cambridge University said it was too early to say if being exposed to more speech improved language skills. The study involved 93 first-time heterosexual parents and their interactions with their child.
The parents wore a device which recorded talk during the day. They also filled in questionnaires about the state of their relationship.