Secret Code Importance

There is nothing stopping a Worker from accepting your HIT on MTurk and clicking Submit without ever actually having looked at your HIT. For this reason requesters routinely include quality assurance checks. The Secret Code is one such quality assurance test. At some point in the study, for example at the very end, you can show the Worker your Secret Code (for example HGTR4EFG) and indicate to the Worker that they should copy this code and paste it on MTurk Prior to submitting the HIT.

Here is an example text:
The study Secret Code is HGTR4EFG. Please enter this code on Amazon Turk before submitting this HIT.
This will guarantee that, at the very least, the Worker reached the end of your survey and saw the last question.

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