Vivienne Parry and Quentin Cooper compete in a battle of the sexes, taking part in live experiments designed to test their respective abilities in controversial areas.
This edition seeks to determine whether men or women are the worst gossips. Psychologist Professor Robin Dunbar presides.
This programme assesses their multi-tasking ability as they attempt to count backwards in 7s while frying an egg, making toast and answering incoming texts. Stephen Monsell, professor of cognitive psychology, analyses their performances.
Map-reading skills are tested as they try to navigate in Milton Keynes, under the scrutiny of psychobiologist Dr Qazi Rahman
The programme tests their ability to empathise.