"...trait optimism doesn't distort how new information is integrated: subjects update their estimates similarly following information that is better or worse than expected."

Are people with high trait optimism disappointed to a greater extent than others? They have to adjust their expectations further to align them with reality/ the results.

Can optimism lead to better outcomes? Can belief in a greater likelihood of the reward lead to it happening? Probably doesn't apply to lotteries and similar situations.

Edit: fixed punctuation.