> Furthermore, a lot of people are biased to skew their responses or lie due to social-desirability bias [1]. The responses are self-reported. It's highly plaus

> Furthermore, a lot of people are biased to skew their responses or lie due to social-desirability bias [1]. The responses are self-reported. It's highly plausible that many people said their opinion "stayed the same" while actually worsening. Not just that, people are also just biased to believe their previous opinions are consistent with their current opinions.