Does Who You See on the Street Determine How Long You'll Live?

A typical walk down the street will probably put you into visual contact with other people. You may not talk to them or know them or even recognize them, but these people may have an impact on your life and the choices you make. Who these people are – and more importantly how old they are – may be guiding your own perceptions of how long you think you'll live.

And how long you think you'll live may affect how long you'll actually live, influencing the decisions you make.