Danger: rose-coloured spectacles can blur your vision

Being in a bad mood could help people see the world more clearly. Researchers from the University of New South Wales induced happy and sad moods in participants by showing them films or asking them to remember positive or negative events. The participants then took part in a series of psychological tests and tasks allowing the researchers to compare people in a bad mood with more cheerful participants. Those participants in a bad mood were less gullible, less likely to make snap decisions based on racial and religious prejudices, less likely to make mistakes when asked to recall an event that they had witnessed and better at stating their case using written arguments.

You can read more about this research at

http://www.telegraph.co.uk/health/healthnews/6490674/Bad-moods-boost-memory-and-judgement.html