Teenagers can "catch" moods from their friends, according to a new study

Teenagers can "catch" moods from their friends, and negative feelings are more contagious than positive - according to a new study.

The research was carried out by two universities in the UK - Oxford and Birmingham.

It looked at two groups of 15 to 19 year old musicians, who took concert trips abroad.

Authors say it's 'conclusive' evidence that individuals are affected by how others around them are feeling.