In follow-up experiments, the researchers asked participants to imagine and write about a hypothetical interaction with someone who was extremely wealthy or extremely poor.

ECONOMIST: They are more selfish

How many jobs have you ever held that were offered by employers less wealthy than you, or poor?

FORBES: The 47% Should Especially Favor Romney/Ryan On Election Day

Booth did not use complex statistical models to decide whether streets should be classified as poor or wealthy, and neither does The Economist.

ECONOMIST: How Charles Booth��s map of Chelsea has been updated

Many northerners voted for him because he was a Muslim or because most of them are as poor as any southern Nigerian, despite the north's wealthy and powerful upper class.

ECONOMIST: Abiola��s dangerous death