Zenovich is particularly good at showing the legal system to be driven by personality and by media politics, but she does Polanski no favors by dwelling on his difficult past (as if pleading for mercy from the viewer) and yet selecting archival clips in which he comes off as almost solipsistically remorseless.

NEWYORKER: Roman Polanski: Wanted and Desired

Dr Lloyd-Evans explains that the absence of cholesterol in the brains of SLOS sufferers means that the neurons and the central nervous system are affected, causing anything from mild personality disorders to severe malformations and multi-organ disease.

BBC: 'No-one had heard of my boys' syndrome'

Psychologists have developed a system that translates a person's gut instincts into a rich picture of personality.

ECONOMIST: A new way of making personality tests useful