@drq обратное не просто верно, но, возможно, _значительно_ вернее.

Results indicated that pessimism was significantly related to performance on all four tasks (p < .001), while optimism was related to performance only on the walking task (p < .05), after controlling for demographic and health variables.
link.springer.com/article/10.1

Thus, the absence of pessimism was more strongly related to positive health outcomes than was the presence of optimism
psycnet.apa.org/doiLanding?doi

@Chia