So is the austerian impulse all a matter of psychology? No, there’s also a fair bit of self-interest involved. As many observers have noted, the turn away from fiscal and monetary stimulus can be interpreted, if you like, as giving creditors priority over workers. Inflation and low interest rates are bad for creditors even if they promote job creation; slashing government deficits in the face of mass unemployment may deepen a depression, but it increases the certainty of bondholders that they’ll be repaid in full. I don’t think someone like Trichet was consciously, cynically serving class interests at the expense of overall welfare; but it certainly didn’t hurt that his sense of economic morality dovetailed so perfectly with the priorities of creditors.