Having established the principle, Dr Huang and Dr Galinsky went on to test the effect of posture on other power-related decisions: whether to speak first in a debate, whether to leave the site of a plane crash to find help and whether to join a movement to free a prisoner who was wrongfully locked up.

ECONOMIST: How you hold yourself affects how you view yourself

If the Ulster Unionists withdraw their backing, it could make for another lively and lengthy debate in April which will test the willingness of all the Stormont parties to breach the principle of parity with Great Britain when it comes to welfare payments.

BBC: It's a love 'n hate thing for the new gang of two