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You don’t have to prescreen again inside your survey but
It serves as a double check
It serves as an attention check
It is an attention check that (unlike other attention checks) we are allowed to eject participants from the survey if they get the answers wrong (inconsistent with their “About You” prescreening information), as long as the questions are asked with exactly the same words. Ordinarily one has to ensure that more than one attention check was answered incorrectly within a 5 plus minute study, and then use the “Reject” function, which can only be done a certain number of times.
It does not take long to set up, you can resuse that part of the survey, so I recommend it.
the categories in which you have added prescreeners will have circled blue numbers beside them indicating how many you’ve added from each category. Click on a category and find the prescreener you’ve added
The wording will be given after "Participants were asked the following question: " and the options will be the same as given below that.
There is a way of having someone look at your survey, but it costs a little bit of money. For instance I charge £16 an hour. I think it would be about 2ukp. Details below.
Or, and this is what I have done to be honest, you can open your study to a few participants, and include a “How can we correct or improve this study?” question with a text field. Then you can add places to your study after editing it a bit if there aren’t any complaints.