Being more engaging and listening to teens can make them feel more connected with their parents. The study also says that silently listening to the teens and showing them that they are valued and appreciated has an adverse effect on their openness to parents.
A study was conducted by the University of Reading and Haifa which asked 13-16 year old children to watch a staged conversation between a parent and child, each situation having different responses by the parent. The participants said that in the version where the parent was attentive, they would have felt better about themselves and be more open about their feelings.
The study concludes by saying nodding and eye-contact is very important while listening to your teen and can have a positive outcome on their mental wellbeing.