Sung this hymn to the horse yet?

So I've mentioned I keep The Mote in God's Eye and its sequel The Gripping Hand on my desk at work so I can't be caught without something good to read. So today I was reading the passage in Mote when the ship returns to human space by hyperspace Jump and all our characters learn that Moties suffer much greater Jump shock than humans. And it reminded me of my observation of Hand that those human characters who identify more with Moties (most obviously Glenda Ruth, a human raised by Moties) are much more susceptible to Jump shock than other humans. This suggests that susceptibility to Jump shock is a psychological thing instead of a physiological thing, dunnit? Surely I'm not the only person who's ever noticed. No doubt there are lengthy threads on newsgroups and message boards I've never read, but has anyone ever asked Larry or Jerry about it? Prolly Jerry'd know better, since they worked in one of his universes, according to the 70s Galaxy article they wrote which I still have somewhere.