"results from previous studies" doesn't fix it;

neither does "subjects view known outcomes as far more inevitable";

Be concrete!

e.g. "Later, they were asked to recall what their predictions were. The subjects, on average, remembered a higher confidence in their past prediction that Bush would win, compared to what had reported before the election."

Again - be concrete. By and large, avoid any dangling references to "previous results", or even previous sections of the same article.