I think the subjects just had a stronger incentive to test out their true tolerance. Without hearing about the two types, they probably just took their hands out to minimize discomfort.
That doesn’t explain why subjects who thought a good heart would mean a lower post-exercise pain threshold took their hands out sooner.
Looking at the actual data from the article, since Yvain neglected to actually state the results of the second case. Subjects told that a good heart was correlated with higher pain threshold after exercise showed an 11.84 second increase in mean immersion time, while subjects told that a good heart was correlated with a decrease in pain threshold showed a 7.63 second decrease in mean immersion time.
I think the subjects just had a stronger incentive to test out their true tolerance. Without hearing about the two types, they probably just took their hands out to minimize discomfort.
That doesn’t explain why subjects who thought a good heart would mean a lower post-exercise pain threshold took their hands out sooner.
Looking at the actual data from the article, since Yvain neglected to actually state the results of the second case. Subjects told that a good heart was correlated with higher pain threshold after exercise showed an 11.84 second increase in mean immersion time, while subjects told that a good heart was correlated with a decrease in pain threshold showed a 7.63 second decrease in mean immersion time.