They literally are, and you're completely misunderstanding the exercise. Judging if 'someone looks more trustworthy according to their looks' is asking them to

They literally are, and you're completely misunderstanding the exercise. Judging if 'someone looks more trustworthy according to their looks' is asking them to 'judge their trustworthiness'. That's it. It's the point. Whether they are 'trustworthy' would definitely be interesting, but beyond the scope of the effort.