Right or left values: more literal than you think

The evidence seems to be piling in nowadays, here's some more: Are your values right or left? The answer is more literal than you think: "'We use mental metaphors to structure our thinking about abstract things,' says psychologist Daniel Casasanto, 'One of those metaphors is space.'"
This is related to what I quote often from Philosophy in the Flesh which for its faults, nevertheless seems to be proving right in its prediction that further brain research would uncover the fundamentally metaphoric basis of much of our 'higher order' thinking. The basic idea is that the neurological schemas (for want of a better term, I'm not a neuro-psychologist) we use for handling space (among other things) in terms of processing informations and decisions about our placement and movement in space are co-opted by the brain to think about other things. Hence 'Up is good'. This bit of research seems to indicate another spatial metaphor such that (I think) 'right hand man' seems to have more than co-incidental basis: it's a motivated sign. But don't go determinist with this:

"People generally believe that their judgments are rational and their concepts are stable," says Casasanto. "But if a few minutes of gentle training can flip our judgments about what's good or bad, then perhaps the mind is more malleable than people think."