ETA: Problems solved, LW is amazing, love you all, &c.

I am in that annoying state where I vaguely recall the shape of a concept, but can't find the right search terms to let me work out what it was I originally read. Does anyone recognise either of the things below?

• a business-ethics test-like-thing where someone left confectionary and a donation box out unsupervised, and then looked at who paid, in some form.

(One of the many situations where googling "morality of doughnuts" doesn't help much)

• a survey-design concept where instead of asking people "do you do x", you ask them "do you think your co-workers do x" and that is taken as more representative, or used to debias the first answer; or, um, something.

Any help appreciated!