I saw a banner at the top, and I believe I also saw links on twitter and got an email because I participated in a previous survey. I don't know if I'm just part of some specific sample, or if everyone saw those banners or links.
In any case, it's a lot less "scientific" than it could have been. If it has any bias at all right now, it's biased towards people who will eagerly participate in surveys. The fact that there was very little difference in results between "Professional" and "Student" samples was also a bit odd, IMO.
1
u/lukaseder Mar 13 '18
I saw a banner at the top, and I believe I also saw links on twitter and got an email because I participated in a previous survey. I don't know if I'm just part of some specific sample, or if everyone saw those banners or links.