The following was the feedback provided by the researchers for the pretest video.
The experimenter spoke very quickly. It was impressive that you seem to have memorized the script. I would recommend reviewing the video and noting your speed of delivery. Note from the original authors suggest the need for the experimenter to really sell the experimental story. Both times that was delivered were quick, rather than deliberate. It won't work without a strong cover story.
*We took notice of that and will make sure that all the experimenters work on their speed of talking and making sure we are clear about what we are saying to the participant.*
The experimenter walked away from the participant, but the experimenter should not be watching the completion of the informed consent or completion of the survey.
*Therefore the experimenter faced in another direction when they walked away and sat down some distance away.*
The last statement about not talking about the true purpose of the study should also be emphasized or you might get cross talk as you conduct the study.
*We will make sure to emphasize on this at the end.*