More or Less: Behind the Stats - WS MoreOrLess: Does politics make us get our sums wrong?

To what degree do our personal opinions cloud our judgement? Yale University researchers have attempted to detect and measure how our political beliefs affect our ability to make rational decisions. The study suggests that our ability to do maths plummets when we are looking at data which clashes with our worldview. Ruth Alexander and Ben Carter consider Professor Dan Kahan's findings. This programme was first broadcast on the BBC World Service.

Start the Week - Fiona Shaw; Simon McBurney; Journeys Into the Unknown

Stephanie Flanders contemplates nothing with science editor Jeremy Webb who is fascinated with the idea of vacuum, voids and absolute zero; and astronomer Carolin Crawford explains there's more to black holes than meets the eye. The director Simon McBurney looks to reveal all in his production of the Magic Flute, including liberating the orchestra from the pit to centre stage; and Fiona Shaw asks 'is this all?' in her re-imagining of Britten's The Rape of Lucretia.

Producer: Natalia Fernandez.