Conventional explanations for a country’s political system would draw on its history, economy and culture. Randy Thornhill from the University of New Mexico, Albuquerque, however, thinks it might be determined by the threat of disease in a region. This triggers psychological biases, which originally evolved to prevent illness spreading, that also hinder the emergence of democratic ideals. Some support for this idea comes from statistical comparisons of different regions.
More from Âé¶¹´«Ã½
Explore the latest news, articles and features

Life
Âé¶¹´«Ã½ recommends a brilliant take on the evolution of birds
Culture

Environment
Striking photos show how sands are encroaching on oases in the Sahara
Regulars

Comment
Think you have a good sense of humour? So do most people…
Regulars

Comment
Sci-fi horror film Backrooms is a triumph for its 20-year-old director
Culture
Popular articles
Trending Âé¶¹´«Ã½ articles
1
Fully autonomous drones have killed human soldiers for the first time
2
Why we should all take quantum physics extremely personally
3
Mysterious ‘cold blob’ in the Atlantic suggests the AMOC is weakening
4
A nuclear war between India and Pakistan could destroy the ozone layer
5
Millions of fossil whale bones found in deep-ocean ‘necropolis’
6
Understanding anorexia’s grip on the brain could unlock new therapies
7
What is a ‘normal’ memory slowdown, and when should I worry?
8
Dinosaur-killing asteroid impact site stayed hot for millions of years
9
AIs can’t stop recommending nuclear strikes in war game simulations
10
Robots are about to overtake armed soldiers as the deciders of war