• In surveys, we always recommend choosing our Extended External survey product where you upload individual links and codes to your survey, which is the safest way of distributing your survey.

• Additionally, we suggest adding attention checks to your survey. These are useful for excluding inattentive participants from the survey. Usually the questions are structured in such a way that a specific answer must be given, which is mentioned in the question itself. If this question is answered incorrectly, participants should be directed out of the survey to an explanation why they were excluded (their IP addresses should be automatically blocked as well).

• If you want participants to read a text in your survey, before you show the text you can warn about attention check questions following. On the page after the text, you can ask users to answer a simple question about the text. Here, you can also exclude inattentive users from your survey.