I don't like the framing of Nudge, but I've read most of what Madeleine Bunting refers to here - and have no doubt the logic is right.
And she encapsulates it well:
Are human beings self-interested creatures or are they collaborative? The right's argument for market capitalism is rooted in the former but the research on the social brain supports the latter.
Put crudely, we are social creatures with an inbuilt tendency to co-operate and seek out each other's approval and that is probably more important in determining day-to-day behaviours than narrowly conceived self-interest.
That's about it.
I wish it meant goodbye to the Right.
I think it will, sometime soon.