The tails go from capturing 11% of people to 21%, not a negligible shift but not a radical one either.
Seems pretty radical to me (assuming it's real and not a measurement artefact, of course).
When I framed it to myself as "that's a doubling of the tails!" it did sound impressive, but I remembered how easy it is to make modest changes in a distribution's mean and/or variance sound extreme by focusing attention on the tails, where such changes have an outsized impact.
My reaction was to roughly translate that tail doubling into the corresponding change in the whole distribution's standard deviation, and I got about 30%. Expressed like that, the change was clearly substantial, but it didn't strike me as radical. Opinions may differ!
(For t...
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