I took this survey about 18 years ago, a year or two after it was introduced. The rather-small class, on the whole, answered with completely made-up information

I took this survey about 18 years ago, a year or two after it was introduced. The rather-small class, on the whole, answered with completely made-up information and joked about it afterward. I can't say that fear of retaliation was the reason for everyone, but it certainly was for me. IIRC the survey was technically anonymous, but the N was very small in our case, and everyone handed it over to teachers in the clear.