Among several forms an IMC can take, a popular one is the so-called '''blue-dot task''',<ref name=myth/> suitable for [[Computer-assisted web interviewing|on-line questonnairequestionnaire]]s. A number of larger blue circles are arranged according to a [[Likert scale]] from (say) "very rarely" to "very frequently". Participants who ignore the instructions and merely want to finish the task will just click any one of these circles. The instructions, however, ask the participants to ignore the larger circles and instead click a little blue dot at the bottom of the screen. Oppenheimer ''et al.'' report that in a large sample of [[undergraduate]] participants, approximately 7% failed this task.<ref name=oppenheimer/>
