A fierce dispute has erupted between Pulitzer prize-winning author Jared Diamond and campaign group Survival International over Diamond's recently published and highly acclaimed comparison of western and tribal societies, The World Until Yesterday: What Can We Learn from Traditional Societies?

The controversy threatens to expose a deep rift in modern anthropology, with each claiming the other has fallen into a delusion that threatens to undermine the chances for survival of the world's remaining tribal societies.

On a book tour of the UK last week, Diamond, 75, was drawn into a dispute with the campaign group after its director, Stephen Corry, condemned Diamond's book as "completely wrong – both factually and morally – and extremely dangerous" for portraying tribal societies as more violent than western ones.

Survival accuses Diamond of applying studies of 39 societies, of which 10 are in his realm of direct experience in New Guinea and neighbouring islands, to advance a thesis that tribal peoples across the world live in a state of near-constant warfare.

"It's a profoundly damaging argument that tribal peoples are more violent than us," said Survival's Jonathan Mazower. "It simply isn't true. If allowed to go unchallenged … it would do tremendous damage to the movement for tribal people's rights. Diamond has constructed his argument using a small minority of anthropologists and using statistics in a way that is misleading and manipulative."

In a lengthy and angry rebuttal on Saturday, Diamond confirmed his finding that "tribal warfare tends to be chronic, because there are not strong central governments that can enforce peace". He accused Survival of falling into the thinking that views tribal people either as "primitive brutish barbarians" or as "noble savages, peaceful paragons of virtue living in harmony with their environment, and admirable compared to us, who are the real brutes".