This video shows a very common mistake when conducting a focus group, i.e. recruiting frequent participants who sometimes get to play fake roles just to fit into the recruiting criteria and get paid for it. From the minute 0:41 the moderator poses a question and one of the participants seems to put his foot in and suggests that he is currently working. The moderator immediatly realized that he was supposed to be jobless according to his list of participants. The participant then try to fix it.
https://www.youtube.com/watch?v=MXhhnUU4PFw
