How do you decide who to trust and who not to trust?
It's one of the key issues that monitors our social interactions with our fellow human beings. Now researchers at Baylor College of Medicine in Houston, Texas have revealed what is going on in our brain as we decide who is trustworthy and who is not.
Using brain imaging techniques they asked 100 participants to play a simple game that involved trusting or not trusting a complete stranger.The results could help us understand the evolutionary basis for trust.
Listen here via BBC.co.uk radio 4
and a further podcast from the Baylor College of Medicine here